low-level error messages cleanup

extra/perror.c:
  error messages fixups
include/my_base.h:
  error codes fixups
myisam/mi_open.c:
  correct error reported
myisam/myisamchk.c:
  correct error reported
myisammrg/myrg_open.c:
  correct error reported
sql/ha_innodb.cc:
  correct error reported
sql/ha_isam.cc:
  reorder table file extensions to get better error on "cannot open the table"
sql/ha_myisam.cc:
  reorder table file extensions to get better error on "cannot open the table"
sql/ha_myisammrg.cc:
  correct error reported
sql/handler.cc:
  correct error reported

1 files changed, 1 insertions, 1 deletions

diff --git a/myisam/mi_open.c b/myisam/mi_open.c
index 0da5ebabf40..077d8c7da3a 100644
--- a/myisam/mi_open.c
+++ b/myisam/mi_open.c
@@ -114,7 +114,7 @@ MI_INFO *mi_open(const char *name, int mode, uint open_flags)
       DBUG_PRINT("error",("Wrong header in %s",name_buff));
       DBUG_DUMP("error_dump",(char*) share->state.header.file_version,
 		head_length);
-      my_errno=HA_ERR_WRONG_TABLE_DEF;
+      my_errno=HA_ERR_NOT_A_TABLE;
       goto err;
     }
     share->options= mi_uint2korr(share->state.header.options);