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, 1 insertions, 0 deletions

diff --git a/sql/my_decimal.cc b/sql/my_decimal.cc
index 8b15ef4e586..2bbdeed2d87 100644
--- a/sql/my_decimal.cc
+++ b/sql/my_decimal.cc
@@ -109,6 +109,7 @@ int my_decimal2string(uint mask, const my_decimal *d,
   result= decimal2string((decimal_t*) d, (char*) str->ptr(),
                          &length, (int)fixed_prec, fixed_dec,
                          filler);
+  str->set_charset(&my_charset_bin);
   str->length(length);
   return check_result(mask, result);
 }