New SET syntax & system variables.

Made a some new buffers thread specific and changeable.
Resize of key_buffer.
AUTO_COMMIT -> AUTOCOMMIT
Fixed mutex bug in DROP DATABASE
Fixed bug when using auto_increment as second part of a key where first part could include NULL.
Split handler->extra() to extra() and extra_opt() to be able to support thread specific buffers.
Don't write message to error log when slave reconnects becasue of timeout.
Fixed possible update problem when using DELETE/UPDATE on small tables
(In some cases we used index even if table scanning would be better)
A lot of minior code cleanups

1 files changed, 15 insertions, 11 deletions

diff --git a/sql/table.cc b/sql/table.cc
index 2eb924caaf2..2a284d4c027 100644
--- a/sql/table.cc
+++ b/sql/table.cc
@@ -357,17 +357,7 @@ int openfrm(const char *name, const char *alias, uint db_stat, uint prgflag,
       }
     }
     if (reg_field->unireg_check == Field::NEXT_NUMBER)
-    {
-      if ((int) (outparam->next_number_index= (uint)
-		 find_ref_key(outparam,reg_field,
-			      &outparam->next_number_key_offset)) < 0)
-	reg_field->unireg_check=Field::NONE;	/* purecov: inspected */
-      else
-      {
-	outparam->found_next_number_field=reg_field;
-	reg_field->flags|=AUTO_INCREMENT_FLAG;
-      }
-    }
+      outparam->found_next_number_field= reg_field;
     if (outparam->timestamp_field == reg_field)
       outparam->timestamp_field_offset=i;
     if (use_hash)
@@ -532,6 +522,20 @@ int openfrm(const char *name, const char *alias, uint db_stat, uint prgflag,
       bfill(outparam->null_flags+outparam->rec_buff_length*2,null_length,255);
   }
 
+
+  if ((reg_field=outparam->found_next_number_field))
+  {
+    if ((int) (outparam->next_number_index= (uint)
+	       find_ref_key(outparam,reg_field,
+			    &outparam->next_number_key_offset)) < 0)
+    {
+      reg_field->unireg_check=Field::NONE;	/* purecov: inspected */
+      outparam->found_next_number_field=0;
+    }
+    else
+      reg_field->flags|=AUTO_INCREMENT_FLAG;
+  }
+
   if (outparam->blob_fields)
   {
     Field **ptr;