New thr_alarm struct for better integration with OS2

Run bootstrap in separate thread
Fix bug in FLUSH TABLES table_name


Docs/manual.texi:
  Updated ChangeLog
client/mysql.cc:
  Added info about compressed protocol
include/getopt.h:
  Fix for OS2
include/global.h:
  Fix for OS2
include/my_sys.h:
  Fix for OS2
include/mysql_com.h:
  Fix for OS2
include/thr_alarm.h:
  Cleanup up alarm struct for OS2 port
isam/isamchk.c:
  Fix for OS2
libmysql/libmysql.c:
  cleanup
libmysql/net.c:
  Use new thr_alarm
libmysql/violite.c:
  Fix for OS2
myisam/ChangeLog:
  Changes
myisam/mi_create.c:
  Use less stack
myisam/myisamchk.c:
  Fix for OS2
mysys/default.c:
  Fix for OS2
mysys/getopt.c:
  Fix for OS2
mysys/mf_format.c:
  Safety
mysys/mf_path.c:
  Fix for OS2
mysys/my_create.c:
  Fix for OS2
mysys/my_lock.c:
  Fix for OS2
mysys/my_open.c:
  Fix for OS2
mysys/thr_alarm.c:
  Use new thr_alarm struct
readline/input.c:
  Fix for OS2
readline/rltty.c:
  Fix for OS2
sql/ha_myisam.cc:
  Remove unnecessary fn_format
sql/my_lock.c:
  Use new thr_alarm
sql/mysql_priv.h:
  Changed bootstrap to run in separate thread to avoid problem with
  small stack
sql/mysqld.cc:
  Changed bootstrap to run in separate thread to avoid problem with
  small stack
sql/net_serv.cc:
  Use new thr_alarm
sql/sql_base.cc:
  Fix problem with FLUSH TABLE table_name
sql/sql_class.cc:
  Fix for new bootstrap
sql/sql_class.h:
  cleanup
sql/sql_delete.cc:
  cleanup
sql/sql_load.cc:
  Fix for OS2
sql/sql_parse.cc:
  Changed bootstrap to run in separate thread to avoid problem with
  small stack
sql/sql_select.cc:
  Reset used structure elements
sql/sql_table.cc:
  For OS2
sql/violite.c:
  For OS2

sql/sql_class.cc

@@ -80,7 +80,7 @@ THD::THD():user_time(0),fatal_error(0),last_insert_id_used(0),
 	   global_read_lock(0)
 {
   proc_info="login";
-  host=user=db=query=ip=0;
+  host=user=priv_user=db=query=ip=0;
   locked=killed=count_cuted_fields=some_tables_deleted=no_errors=password=
     query_start_used=0;
   query_length=col_access=0;