Moved a lot of old bug fixes and safe cleanups from Maria 5.1 tree to 5.1

- Reserver namespace and place in frm for TABLE_CHECKSUM and PAGE_CHECKSUM create options
- Added syncing of directory when creating .frm files
- Portability fixes
- Added missing cast that could cause bugs
- Code cleanups
- Made some bit functions inline
- Moved things out of myisam.h to my_handler.h to make them more accessable
- Renamed some myisam variables and defines to make them more globaly usable (as they are used outside of MyISAM)
- Fixed bugs in error conditions
- Use compiler time asserts instead of run time
- Fixed indentation
HA_EXTRA_PREPARE_FOR_DELETE -> HA_EXTRA_PREPARE_FOR_DROP as the old name was wrong
(Added a define for old value to ensure we don't break any old code)
Added HA_EXTRA_PREPARE_FOR_RENAME as a signal for rename (before we used a DROP signal which is wrong)
- Initialize error messages early to get better errors when mysqld or an engine fails to start
- Fix windows bug that query_performance_frequency was not initialized if registry code failed
- thread_stack -> my_thread_stack_size


BitKeeper/etc/ignore:
  added libmysqld/scheduler.cc libmysqld/sql_connect.cc libmysqld/sql_tablespace.cc
include/Makefile.am:
  Added my_bit.h
include/m_string.h:
  Added bzero_if_purify() to simplify code
include/my_base.h:
  Reserve options for the future
  Added HA_OPTION_NULL_FIELDS, HA_OPTION_PAGE_CHECKSUM, HA_CREATE_PAGE_CHECKSUM
  Added new error message HA_ERR_NEW_FILE
  Added optional new row type BLOCK_RECORD
  Renamed HA_EXTRA_PREPARE_FOR_DELETE to HA_EXTRA_PREPARE_FOR_DROP
  Added HA_EXTRA_PREARE_FOR_RENAME to inform handler we will do a rename
  (Added define to make things compatible until 6.0)
  Moved invalidator_by_filename form myisam.h
include/my_dbug.h:
  Poirtablity fix
include/my_global.h:
  Added helper macros STATIC_INLINE and MY_ERRPTR
  Added NEED_EXPLICIT_SYNC_DIR
include/my_handler.h:
  Added missing casts
  Moved some constants and macros out from myisam.h to make these generally available
  Renamed mi_compare_text() to ha_compare_text() as this function is not myisam specific
  Renamed mi_portable_sizeof_char_ptr to portable_sizeof_char_ptr
  Added registering of handler messages for better error reporting during startup
include/my_sys.h:
  Added my_sync_dir() and my_sync_dir_by_file()
  More comments
  Some indentation fixes
  Moved bit functions to my_bit.h
  Added prototype for crc32()
include/myisam.h:
  Moved things from here to my_handler.h to make them more accessable
libmysql/Makefile.shared:
  Added my_sync
mysys/array.c:
  Fixed indentation and spelling errors
  Split set_dynamic() to two functions
  Added allocate_dynamic() as a new visiable function
  (no new code, only refactoring)
mysys/mf_iocache.c:
  More DBUG
mysys/mf_keycache.c:
  More explicite ASSERT
  Removed some casts
  Fixed indentation
mysys/mf_tempfile.c:
  Fixed bug with possible dangling file descriptor
mysys/my_atomic.c:
  Use compile time asserts instead of run time
mysys/my_bit.c:
  Make most bit functions inline
mysys/my_bitmap.c:
  Added my_bit.h
mysys/my_compress.c:
  Fixed indentation
mysys/my_create.c:
  Added my_sync_by_dir()
mysys/my_delete.c:
  Added my_sync_by_dir()
mysys/my_error.c:
  init_glob_errs() is now done in my_init()
mysys/my_handler.c:
  mi_compare_text() -> ha_compare_text() as this is not MyISAM specific
  Added functions to initialize handler error messages
  Fixed indentation
  More clear usage of include files
mysys/my_init.c:
  Added my_thread_stack_size to be used by other programs
  Ensure that global error messages are always initialized
  Fix windows bug that query_performance_frequency was not initialized if registry code failed
mysys/my_open.c:
  More comments
  Removed duplicate code
mysys/my_pread.c:
  Ensure that my_errno is set even if errno is 0
mysys/my_realloc.c:
  Added comment
mysys/my_rename.c:
  Added syncing of directories
mysys/my_symlink.c:
  Added my_sync_by_dir()
mysys/my_sync.c:
  Added my_sync_dir()
   
  On recent Mac OS X, fcntl(F_FULLFSYNC) is recommended over fsync()
  (see "man fsync" on Mac OS X 10.3).
  my_sync_dir(): to sync a directory after a file creation/deletion/
  renaming; can be called directly or via MY_SYNC_DIR in my_create/
  my_delete/my_rename(). No-op except on Linux (see "man fsync" on Linux).
  my_sync_dir_from_file(): same as above, just more practical when the
  caller has a file name but no directory name ready.
  Should the #warning even be a #error? I mean do we want to release
  binaries which don't guarantee any durability?
mysys/safemalloc.c:
  Added sf_malloc_report_allocated() (Debugging aid)
sql/gen_lex_hash.cc:
  Remove inline for big function
sql/ha_partition.cc:
  HA_EXTRA_PREPARE_FOR_DELETE -> HA_EXTRA_PREPARE_FOR_DROP
  prepare_for_delete -> prepare_for_rename() as this is the the time this function is called
sql/ha_partition.h:
  prepare_for_delete -> prepare_for_rename() as this is the the time this function is called
sql/handler.cc:
  ha_init_errors() is now called at startup before plugins
  This allows us to get better error messages
sql/handler.h:
  Reserve enum value for Maria
  Add future proof enum for page checksums
sql/item_func.cc:
  Include my_bit.h
sql/lex.h:
  Added future proof CREATE table options
sql/log.cc:
  Added comment
sql/mysql_priv.h:
  thread_stack moved to mysys
sql/mysqld.cc:
  thread_stack moved to mysys
  thread_stack -> my_thread_stack_size
  Initialize myisam key caches before plugins starts
  Initialize error to allow storage engine to give better error messages if init failes.
  Fixed indentation
  Group all MyISAM options together
  Added new status variable 'Opened_table_definitions' to allow one to monitor if table definition cache is too small
  Clarified some option help messages
sql/opt_range.cc:
  Removed wrong usage of SAFE_MODE (this disabled key usage for UPDATES, which was never the intention)
  Removed print if total cost in a place where it didn't have any usable value
sql/set_var.cc:
  thread_stack -> my_thread_stack
sql/sql_class.cc:
  Intialize transaction object properly
sql/sql_parse.cc:
  thread_stack -> my_thread_stack
sql/sql_select.cc:
  Include my_bit.h
  mi_portable_sizeof_char_ptr -> portable_sizeof_char_ptr
sql/sql_show.cc:
  Simplify handling of ha_choice variables
  Added future safe PAGE_CHECKSUM option
  Addid missing 'transactional=#' in information schema
sql/sql_table.cc:
  HA_EXTRA_PREPARE_FOR_DELETE -> HA_EXTRA_FORCE_REOPEN when doing reopen
  HA_EXTRA_PREPARE_FOR_DELETE -> HA_EXTRA_PREPARE_FOR_RENAME when doing rename
  Removed not needed initialization
sql/sql_test.cc:
  thread_stack -> my_thread_stack
sql/sql_yacc.yy:
  Simplify handling of ha_choice variables
  Added future proof create table options TABLE_CHECKSUM=# & PAGE_CHECKSUM=#
sql/table.cc:
  Save page_checksum in .frm
sql/table.h:
  Added variable to hold create table option PAGE_CHECKSUM
sql/unireg.cc:
  Added syncing of directories
storage/myisam/ft_boolean_search.c:
  mi_compare_text() -> ha_compare_text()
storage/myisam/ft_eval.c:
  mi_compare_text() -> ha_compare_text()
storage/myisam/ft_nlq_search.c:
  mi_compare_text() -> ha_compare_text()
storage/myisam/ft_parser.c:
  mi_compare_text() -> ha_compare_text()
storage/myisam/ft_stopwords.c:
  mi_compare_text() -> ha_compare_text()
storage/myisam/ft_test1.c:
  mi_portable_sizeof_char_ptr -> portable_sizeof_char_ptr
storage/myisam/ft_update.c:
  mi_compare_text() -> ha_compare_text()
storage/myisam/ha_myisam.cc:
  Include my_bit.h
storage/myisam/mi_check.c:
  MI_MAX_POSSIBLE_KEY_BUFF -> HA_MAX_POSSIBLE_KEY_BUFF
  mi_compare_text() -> ha_compare_text()
  Added BLOCK_RECORD to avoid compiler warnings
storage/myisam/mi_checksum.c:
  mi_portable_sizeof_char_ptr -> portable_sizeof_char_ptr
storage/myisam/mi_create.c:
  MI_MAX_POSSIBLE_KEY -> HA_MAX_POSSIBLE_KEY
  MI_MAX_KEY_BLOCK_SIZE -> HA_MAX_KEY_BLOCK_SIZE
  mi_portable_sizeof_char_ptr -> portable_sizeof_char_ptr
storage/myisam/mi_dynrec.c:
  mi_portable_sizeof_char_ptr -> portable_sizeof_char_ptr
storage/myisam/mi_extra.c:
  HA_EXTRA_PREPARE_FOR_DELETE -> HA_EXTRA_PREPARE_FOR_DROP
storage/myisam/mi_open.c:
  MI_MAX_POSSIBLE_KEY -> HA_MAX_POSSIBLE_KEY
  mi_portable_sizeof_char_ptr -> portable_sizeof_char_ptr
storage/myisam/mi_packrec.c:
  mi_portable_sizeof_char_ptr -> portable_sizeof_char_ptr
storage/myisam/mi_range.c:
  mi_compare_text -> ha_compare_text
storage/myisam/mi_test1.c:
  mi_portable_sizeof_char_ptr -> portable_sizeof_char_ptr
storage/myisam/mi_test2.c:
  mi_portable_sizeof_char_ptr -> portable_sizeof_char_ptr
storage/myisam/mi_unique.c:
  mi_compare_text() -> ha_compare_text()
storage/myisam/mi_write.c:
  mi_compare_text() -> ha_compare_text()
storage/myisam/myisamchk.c:
  Include my_bit.h
storage/myisam/myisamdef.h:
  Moved store_key_length_inc to handler.h
storage/myisam/myisampack.c:
  mi_portable_sizeof_char_ptr -> portable_sizeof_char_ptr
storage/myisam/sp_test.c:
  mi_portable_sizeof_char_ptr -> portable_sizeof_char_ptr
storage/myisammrg/ha_myisammrg.cc:
  HA_EXTRA_PREPARE_FOR_DELETE -> HA_EXTRA_PREPARE_FOR_DROP
include/my_bit.h:
  New BitKeeper file ``include/my_bit.h''

include/myisam.h

@@ -34,22 +34,16 @@ extern "C" {
 #include <mysql/plugin.h>
 
 /*
-  There is a hard limit for the maximum number of keys as there are only
-  8 bits in the index file header for the number of keys in a table.
-  This means that 0..255 keys can exist for a table. The idea of
-  MI_MAX_POSSIBLE_KEY is to ensure that one can use myisamchk & tools on
-  a MyISAM table for which one has more keys than MyISAM is normally
-  compiled for. If you don't have this, you will get a core dump when
-  running myisamchk compiled for 128 keys on a table with 255 keys.
+  Limit max keys according to HA_MAX_POSSIBLE_KEY
 */
-#define MI_MAX_POSSIBLE_KEY         255             /* For myisam_chk */
-#if MAX_INDEXES > MI_MAX_POSSIBLE_KEY
-#define MI_MAX_KEY                  MI_MAX_POSSIBLE_KEY /* Max allowed keys */
+
+#if MAX_INDEXES > HA_MAX_POSSIBLE_KEY
+#define MI_MAX_KEY                  HA_MAX_POSSIBLE_KEY /* Max allowed keys */
 #else
 #define MI_MAX_KEY                  MAX_INDEXES         /* Max allowed keys */
 #endif
 
-#define MI_MAX_POSSIBLE_KEY_BUFF    (1024+6+6)      /* For myisam_chk */
+#define MI_MAX_POSSIBLE_KEY_BUFF    HA_MAX_POSSIBLE_KEY_BUFF
 /*
   The following defines can be increased if necessary.
   But beware the dependency of MI_MAX_POSSIBLE_KEY_BUFF and MI_MAX_KEY_LENGTH.
@@ -69,8 +63,6 @@ extern "C" {
 #define MI_MIN_KEY_BLOCK_LENGTH	1024	/* Min key block length */
 #define MI_MAX_KEY_BLOCK_LENGTH	16384
 
-#define mi_portable_sizeof_char_ptr 8
-
 /*
   In the following macros '_keyno_' is 0 .. keys-1.
   If there can be more keys than bits in the key_map, the highest bit
@@ -256,8 +248,6 @@ typedef struct st_columndef		/* column information */
 #endif
 } MI_COLUMNDEF;
 
-/* invalidator function reference for Query Cache */
-typedef void (* invalidator_by_filename)(const char * filename);
 
 extern char * myisam_log_filename;		/* Name of logfile */
 extern ulong myisam_block_size;
@@ -310,7 +300,7 @@ extern int mi_delete_all_rows(struct st_myisam_info *info);
 extern ulong _mi_calc_blob_length(uint length , const uchar *pos);
 extern uint mi_get_pointer_length(ulonglong file_length, uint def);
 
-/* this is used to pass to mysql_myisamchk_table -- by Sasha Pachev */
+/* this is used to pass to mysql_myisamchk_table */
 
 #define   MYISAMCHK_REPAIR 1  /* equivalent to myisamchk -r */
 #define   MYISAMCHK_VERIFY 2  /* Verify, run repair if failure */
@@ -431,8 +421,8 @@ typedef struct st_mi_check_param
   ulonglong unique_count[MI_MAX_KEY_SEG+1];
   ulonglong notnull_count[MI_MAX_KEY_SEG+1];
   
-  ha_checksum key_crc[MI_MAX_POSSIBLE_KEY];
-  ulong rec_per_key_part[MI_MAX_KEY_SEG*MI_MAX_POSSIBLE_KEY];
+  ha_checksum key_crc[HA_MAX_POSSIBLE_KEY];
+  ulong rec_per_key_part[MI_MAX_KEY_SEG*HA_MAX_POSSIBLE_KEY];
   void *thd;
   const char *db_name, *table_name;
   const char *op_name;