Lots of small cleanups

- Simplified use_trans_cache() to return at once if is_transactional is set
- Indentation and spelling errors fixed
- Don't call signal_update() if update_binlog_end_pos() is called as the
  function already calls signal_update()
- Removed not used function wait_for_update_bin_log(), which would cause
  errors if ever used.
- Simplified handler::clone() by always allocating 'ref' in ha_open(). To do
  this I added an optional MEM_ROOT argument to ha_open() to be used when
  allocating 'ref'
- Changed arguments to get_system_var() from LEX_CSTRING to LEX_CSTRING*
- Added THD as argument to create_select_for_variable(). Changed also char*
  argument to LEX_CSTRING to avoid strlen() call.
- Change calls to append() to use LEX_CSTRING

1 files changed, 0 insertions, 1 deletions

diff --git a/sql/log.h b/sql/log.h
index f57693f9d2a..30829bdb33c 100644
--- a/sql/log.h
+++ b/sql/log.h
@@ -711,7 +711,6 @@ public:
   void wait_for_sufficient_commits();
   void binlog_trigger_immediate_group_commit();
   void wait_for_update_relay_log(THD* thd);
-  int  wait_for_update_bin_log(THD* thd, const struct timespec * timeout);
   void init(ulong max_size);
   void init_pthread_objects();
   void cleanup();