When flushing tables, there were a slight chance that the flush was occuring
between processing of two table map events. Since the tables are opened
one by one, it might result in that the tables were not valid and that sub-
sequent locking of tables would cause the slave to crash.

The problem is solved by opening and locking all tables at once using
simple_open_n_lock_tables(). Also, the patch contain a change to open_tables()
so that pre-locking only takes place when the trg_event_map is not zero, which
was not the case before (this caused the lock to be placed in thd->locked_tables
instead of thd->lock since the assumption was that triggers would be called
later and therefore the tables should be pre-locked).

into  magare.gmz:/home/kgeorge/mysql/work/merge-build-5.1-bugteam

into  mats-laptop.(none):/home/bk/b29020-mysql-5.1-rpl

tables is not zero any more. For row-based logging, there is an extra commit
for sending rows changed by the statement to the binary log.

into  magare.gmz:/home/kgeorge/mysql/work/merge-build-5.1-bugteam

into  magare.gmz:/home/kgeorge/mysql/work/merge-build-5.1-bugteam

into  magare.gmz:/home/kgeorge/mysql/work/merge-build-5.1-bugteam

into  amd64.(none):/src/bug26243/my51-bug26243

into  mysql1000.(none):/home/andrei/MySQL/MERGE/5.1-main2rpl

If a binlog file is manually replaced with a namesake directory the internal purging did
not handle the error of deleting the file so that eventually
a post-execution guards fires an assert.

Fixed with reusing a snippet of code for bug@18199 to tolerate lack of the file but no other error 
at an attempt to delete it.
The same applied to the index file deletion.

The cset carries pieces of manual merging.

into  macbook.gmz:/Users/kgeorge/mysql/work/pb-5.1-bugteam

into  macbook.gmz:/Users/kgeorge/mysql/work/pb-5.1-bugteam

into  mysql1000.(none):/home/andrei/MySQL/MERGE/5.1-main2rpl

into  mysql1000.(none):/home/andrei/MySQL/MERGE/5.1-main2rpl

into  macbook.gmz:/Users/kgeorge/mysql/work/pb-5.1-bugteam

into  amd64.(none):/src/bug26243/my51-bug26243

into  amd64.(none):/src/bug26243/my51-bug26243

into  quad.opbmk:/mnt/raid/alik/MySQL/devel/5.1-bt-merged

into  amd64.(none):/src/bug26243/my51-bug26243

into  amd64.(none):/src/bug26243/my50-bug26243

  1. Use 'dat' extension, because it is handled in Makefile.am;
  2. Fix typo: the bug id is 35469, not 35649.

into  amd64.(none):/src/bug26243/my50-bug26243

  fixed warning in 5.1-marvel in fix for bug 25177

  added my_handler_errors.h

into  amd64.(none):/src/bug26243/my51-bug26243

into  quad.opbmk:/mnt/raid/alik/MySQL/devel/5.0-bt

into  amd64.(none):/src/bug26243/my51-bug26243

- Backported the 5.1 DBUG to 5.0.
- Avoid memory cleanup race on Windows client for CTRL-C

into  mats-laptop.(none):/home/bk/b29020-mysql-5.1-rpl

  in perror and handler descriptors (BUG#25177)
Fixed problem of masking mysql error by system
  error in perror (BUG#23028)