Merge with MySQL 5.1, with following additions:

- Moved some code from innodb_plugin to xtradb, to ensure that all tests runs
- Did changes in pbxt and maria storage engines becasue of changes in thd->query
- Reverted wrong code in sql_table.cc for how ROW_FORMAT is used.

This is a re-commit of Monty's merge to eliminate an extra commit from
MySQL-5.1.42 that was accidentally included in the merge.

This is a merge of the MySQL 5.1.41 clone-off (clone-5.1.41-build). In
case there are any extra changes done before final MySQL 5.1.41
release, these will need to be merged later before MariaDB 5.1.41
release.

1 files changed, 17 insertions, 1 deletions

diff --git a/sql/set_var.h b/sql/set_var.h
index f2c7c0ba30f..5b4760589af 100644
--- a/sql/set_var.h
+++ b/sql/set_var.h
@@ -634,6 +634,7 @@ public:
   uchar *value_ptr(THD *thd, enum_var_type type, LEX_STRING *base);
 };
 
+#ifndef DBUG_OFF
 class sys_var_thd_dbug :public sys_var_thd
 {
 public:
@@ -647,8 +648,23 @@ public:
   void set_default(THD *thd, enum_var_type type) { DBUG_POP(); }
   uchar *value_ptr(THD *thd, enum_var_type type, LEX_STRING *b);
 };
+#endif /* DBUG_OFF */
 
-
+#if defined(ENABLED_DEBUG_SYNC)
+/* Debug Sync Facility. Implemented in debug_sync.cc. */
+class sys_var_debug_sync :public sys_var_thd
+{
+public:
+  sys_var_debug_sync(sys_var_chain *chain, const char *name_arg)
+    :sys_var_thd(name_arg)
+  { chain_sys_var(chain); }
+  bool check(THD *thd, set_var *var);
+  bool update(THD *thd, set_var *var);
+  SHOW_TYPE show_type() { return SHOW_CHAR; }
+  bool check_update_type(Item_result type) { return type != STRING_RESULT; }
+  uchar *value_ptr(THD *thd, enum_var_type type, LEX_STRING *base);
+};
+#endif /* defined(ENABLED_DEBUG_SYNC) */
 
 /* some variables that require special handling */