Merge weblab.(none):/home/marcsql/TREE/mysql-5.1-base

into  weblab.(none):/home/marcsql/TREE/mysql-5.1-rt-merge


mysql-test/r/trigger.result:
  Auto merged
mysql-test/t/trigger.test:
  Auto merged
sql/field.cc:
  Auto merged
sql/field.h:
  Auto merged
sql/handler.cc:
  Auto merged
sql/item.h:
  Auto merged
sql/log.cc:
  Auto merged
sql/mysql_priv.h:
  Auto merged
sql/sql_class.h:
  Auto merged
sql/sql_insert.cc:
  Auto merged
sql/sql_parse.cc:
  Auto merged
sql/sql_partition.cc:
  Auto merged
sql/sql_prepare.cc:
  Auto merged
sql/sql_select.cc:
  Auto merged
sql/sql_table.cc:
  Auto merged
sql/sql_yacc.yy:
  Auto merged

sql/mysql_priv.h

@@ -1601,6 +1601,7 @@ extern int creating_table;    // How many mysql_create_table() are running
 */
 
 extern time_t server_start_time;
+extern uint mysql_data_home_len;
 extern char *mysql_data_home,server_version[SERVER_VERSION_LENGTH],
 	    mysql_real_data_home[], *opt_mysql_tmpdir, mysql_charsets_dir[],
             def_ft_boolean_syntax[sizeof(ft_boolean_syntax)];
@@ -1923,6 +1924,8 @@ uint filename_to_tablename(const char *from, char *to, uint to_length);
 uint tablename_to_filename(const char *from, char *to, uint to_length);
 uint build_table_filename(char *buff, size_t bufflen, const char *db,
                           const char *table, const char *ext, uint flags);
+uint build_table_shadow_filename(char *buff, size_t bufflen, 
+                                 ALTER_PARTITION_PARAM_TYPE *lpt);
 /* Flags for conversion functions. */
 #define FN_FROM_IS_TMP  (1 << 0)
 #define FN_TO_IS_TMP    (1 << 1)