Merge with MySQL 5.1.55

- Fixed some issues with partitions and connection_string, which also fixed lp:716890 "Pre- and post-recovery crash in Aria"
- Fixed wrong assert in Aria

Now need to merge with latest xtradb before pushing 

sql/ha_partition.cc:
  Ensure that m_ordered_rec_buffer is not freed before close.
sql/mysqld.cc:
  Changed to use opt_stack_trace instead of opt_pstack.
  Removed references to pstack
sql/partition_element.h:
  Ensure that connect_string is initialized
storage/maria/ma_key_recover.c:
  Fixed wrong assert

1 files changed, 3 insertions, 2 deletions

diff --git a/regex/regexec.c b/regex/regexec.c
index 338c1bfa7fe..c0d03335b41 100644
--- a/regex/regexec.c
+++ b/regex/regexec.c
@@ -117,6 +117,7 @@ size_t nmatch;
 my_regmatch_t pmatch[];
 int eflags;
 {
+	char *pstr = (char *) str;
 	register struct re_guts *g = preg->re_g;
 #ifdef REDEBUG
 #	define	GOODFLAGS(f)	(f)
@@ -133,7 +134,7 @@ int eflags;
 
 	if ((size_t) g->nstates <= CHAR_BIT*sizeof(states1) &&
 	    !(eflags&REG_LARGE))
-		return(smatcher(preg->charset, g, (char *)str, nmatch, pmatch, eflags));
+		return(smatcher(preg->charset, g, pstr, nmatch, pmatch, eflags));
 	else
-		return(lmatcher(preg->charset, g, (char *)str, nmatch, pmatch, eflags));
+		return(lmatcher(preg->charset, g, pstr, nmatch, pmatch, eflags));
 }