Added MARIA_SHARE *share to a lot of places to make code simpler

Changed info->s -> share to get more efficent code
Updated arguments to page accessor functions to use MARIA_SHARE * instead of MARIA_HA *.
Tested running tests in quick mode (no balance page on insert and only when critical on delete)
Fixed bug in underflow handling in quick mode
Fixed bug in log handler where it accessed not initialized variable
Fixed bug in log handler where it didn't free mutex in unlikely error condition
Removed double write of page in case of of some underflow conditions
Added DBUG_PRINT in safemutex lock/unlock


dbug/dbug.c:
  Compile without SAFE_MUTEX (to be able to use DBUG_PRINT in safe_mutex code)
  Use calls to get/set my_thread_var->dbug. (Make dbug independent of compile time options for mysys)
include/my_pthread.h:
  Added prototypes for my_thread_var_get_dbug() & my_thread_var_set_dbug()
mysql-test/lib/mtr_report.pl:
  Don't check warnings in log files if we are using --extern
mysys/my_thr_init.c:
  Added my_thread_var_get_dbug() & my_thread_var_set_dbug()
mysys/thr_mutex.c:
  Added DBUG printing of addresses to mutex for lock/unlock
storage/maria/ma_blockrec.c:
  Fixed comment
storage/maria/ma_check.c:
  Added MARIA_SHARE *share to a lot of places to make code simpler
  info->s -> share
  Updated arguments to page accessor functions
storage/maria/ma_close.c:
  Indentation fixes
storage/maria/ma_create.c:
  Calculate min_key_length correctly
storage/maria/ma_dbug.c:
  Indentation fixes
storage/maria/ma_delete.c:
  Added MARIA_SHARE *share to a lot of places to make code simpler
  info->s -> share
  Updated arguments to page accessor functions
  Removed some writing of key pages that underflow (will be written by caller)
  Fixed crashing bug in underflow handling when using quick mode
storage/maria/ma_delete_all.c:
  Indentation fixes
storage/maria/ma_dynrec.c:
  Indentation fixes
storage/maria/ma_extra.c:
  Fixed indentation
  Removed old useless code
  Reset share->changed if we have written state
storage/maria/ma_ft_update.c:
  Added MARIA_SHARE *share to a lot of places to make code simpler
  info->s -> share
  Updated arguments to page accessor functions
storage/maria/ma_info.c:
  Indentation fixes
storage/maria/ma_key_recover.c:
  Added MARIA_SHARE *share to a lot of places to make code simpler
  info->s -> share
  Updated arguments to page accessor functions
storage/maria/ma_locking.c:
  Indentation fixes
storage/maria/ma_loghandler.c:
  Removed wrapper functions translog_mutex_lock and translog_mutex_unlock (safemutex now does same kind of printing)
  Renamed LOGREC_REDO_INSERT_ROW_BLOB to LOGREC_REDO_INSERT_NOT_USED to mark it free
  Fixed some DBUG_PRINT to ensure that convert-dbug-for-diff works
  Fixed bug in translog_flush() that caused log to stop syncing to disk
  Added missing mutex_unlock in case of error
storage/maria/ma_loghandler.h:
  Renamed LOGREC_REDO_INSERT_ROW_BLOB to LOGREC_REDO_INSERT_NOT_USED to mark it free
storage/maria/ma_open.c:
  Indentation fixes
storage/maria/ma_packrec.c:
  Indentation fixes
storage/maria/ma_page.c:
  Added MARIA_SHARE *share to a lot of places to make code simpler
  info->s -> share
  Updated arguments to page accessor functions
  Added check that we never write a key page without content (except in recovery where a key page may temporary be without content)
storage/maria/ma_preload.c:
  Updated arguments to page accessor functions
storage/maria/ma_range.c:
  Updated arguments to page accessor functions
storage/maria/ma_rkey.c:
  Indentation fixes
storage/maria/ma_rprev.c:
  Indentation fixes
storage/maria/ma_rt_index.c:
  Added MARIA_SHARE *share to a lot of places to make code simpler
  info->s -> share
  Updated arguments to page accessor functions
storage/maria/ma_rt_index.h:
  Updated arguments to page accessor functions
storage/maria/ma_rt_key.c:
  Added MARIA_SHARE *share to a lot of places to make code simpler
  info->s -> share
  Updated arguments to page accessor functions
storage/maria/ma_rt_mbr.c:
  Added MARIA_SHARE *share to a lot of places to make code simpler
  info->s -> share
  Updated arguments to page accessor functions
storage/maria/ma_rt_split.c:
  Added MARIA_SHARE *share to a lot of places to make code simpler
  info->s -> share
  Updated arguments to page accessor functions
storage/maria/ma_search.c:
  Added MARIA_SHARE *share to a lot of places to make code simpler
  info->s -> share
  Updated arguments to page accessor functions
storage/maria/ma_sort.c:
  Indentation fixes
storage/maria/ma_statrec.c:
  Indentation fixes
storage/maria/ma_test1.c:
  Added extra undo test
  Flush also keys in -u1, to ensure that the full log is flushed
storage/maria/ma_test2.c:
  Added extra undo test
  Flush also keys in -u1, to ensure that the full log is flushed
storage/maria/ma_test_recovery.expected:
  Updated results
storage/maria/ma_test_recovery:
  Added extra undo test
storage/maria/ma_update.c:
  Indentation fixes
storage/maria/ma_write.c:
  Added MARIA_SHARE *share to a lot of places to make code simpler
  info->s -> share
  Updated arguments to page accessor functions
  Prepare for quick mode for insert (don't balance page)
storage/maria/maria_chk.c:
  Added MARIA_SHARE *share to a lot of places to make code simpler
  info->s -> share
  Updated arguments to page accessor functions
storage/maria/maria_def.h:
  Updated arguments to page accessor functions

storage/maria/ma_key_recover.c

@@ -258,7 +258,7 @@ my_bool _ma_log_prefix(MARIA_HA *info, my_off_t page,
 
 #ifdef EXTRA_DEBUG_KEY_CHANGES
   {
-    int page_length= _ma_get_page_used(info, buff);
+    int page_length= _ma_get_page_used(info->s, buff);
     ha_checksum crc;
     crc= my_checksum(0, buff + LSN_STORE_SIZE, page_length - LSN_STORE_SIZE);
     log_pos[0]= KEY_OP_CHECK;
@@ -442,10 +442,11 @@ my_bool _ma_log_add(MARIA_HA *info, my_off_t page, uchar *buff,
 
 #ifdef EXTRA_DEBUG_KEY_CHANGES
   {
+    MARIA_SHARE *share= info->s;
     ha_checksum crc;
-    uint save_page_length= _ma_get_page_used(info, buff);
+    uint save_page_length= _ma_get_page_used(share, buff);
     uint new_length= buff_length + move_length;
-    _ma_store_page_used(info, buff, new_length);
+    _ma_store_page_used(share, buff, new_length);
     crc= my_checksum(0, buff + LSN_STORE_SIZE, new_length - LSN_STORE_SIZE);
     log_pos[0]= KEY_OP_CHECK;
     int2store(log_pos+1, new_length);
@@ -455,7 +456,7 @@ my_bool _ma_log_add(MARIA_HA *info, my_off_t page, uchar *buff,
     log_array[TRANSLOG_INTERNAL_PARTS + translog_parts].length= 7;
     changed_length+= 7;
     translog_parts++;
-    _ma_store_page_used(info, buff, save_page_length);
+    _ma_store_page_used(share, buff, save_page_length);
   }
 #endif
 
@@ -635,7 +636,7 @@ uint _ma_apply_redo_index_free_page(MARIA_HA *info,
   }
   /* Free page */
   bzero(buff + LSN_STORE_SIZE, share->keypage_header - LSN_STORE_SIZE);
-  _ma_store_keynr(info, buff, (uchar) MARIA_DELETE_KEY_NR);
+  _ma_store_keynr(info->s, buff, (uchar) MARIA_DELETE_KEY_NR);
   mi_sizestore(buff + share->keypage_header, old_link);
   share->state.changed|= STATE_NOT_SORTED_PAGES;
 
@@ -727,7 +728,7 @@ uint _ma_apply_redo_index(MARIA_HA *info,
     goto err;
   }
 
-  _ma_get_used_and_nod(info, buff, page_length, nod_flag);
+  _ma_get_used_and_nod(share, buff, page_length, nod_flag);
   keypage_header= share->keypage_header;
   org_page_length= page_length;
   DBUG_PRINT("info", ("page_length: %u", page_length));
@@ -818,7 +819,7 @@ uint _ma_apply_redo_index(MARIA_HA *info,
       ha_checksum crc;
       check_page_length= uint2korr(header);
       crc=               uint4korr(header+2);
-      _ma_store_page_used(info, buff, page_length);
+      _ma_store_page_used(share, buff, page_length);
       DBUG_ASSERT(check_page_length == page_length);
       DBUG_ASSERT(crc == (uint32) my_checksum(0, buff + LSN_STORE_SIZE,
                                               page_length- LSN_STORE_SIZE));
@@ -836,7 +837,7 @@ uint _ma_apply_redo_index(MARIA_HA *info,
   DBUG_ASSERT(header == header_end);
 
   /* Write modified page */
-  _ma_store_page_used(info, buff, page_length);
+  _ma_store_page_used(share, buff, page_length);
 
   /*
     Clean old stuff up. Gives us better compression of we archive things