make more independent of SP

updated sources

- split into several files
- forbid parallel execution (before analyse is done how to make it possible)
  because the same sp_head instance cannot be executed in parallel
- added GPL headers
- changed EVENT_ACL to be per DB variable
- fixed minor problems

into mysql.com:/M51/mysql-5.1

    Fix a typo: "distibution" -> "distribution".

into  mysql.com:/usr/home/bar/mysql-5.1-new

Changed to alphabetical order

into  mysql.com:/tmp/x/mysql-5.1-new

into mysql.com:/data0/mysqldev/my/mysql-5.1.3-pushmain

into mysql.com:/data0/mysqldev/my/mysql-5.1.3-fixes

The previous variant where it was a specific ha_partition method
only worked for the partition handler. It was unfortunately called also
for the NDB handler and in this case it called a random method in the
NDB handler with random input.

into  zim.(none):/home/brian/mysql/mysql-5.1-new

Its funny, I am reading through the forums and someone asks "Can I please have a REPLACE INTO, instead an INSERT INTO?" and I remember how often I have used a sed script to modify MySQL dumps to have exactly that.
So, use --replace and instead of getting INSERT INTO you will INSTEAD get REPLACE INTO. Buyer beward, REPLACE is a MySQL SQL, so you will not end up with a dump that can be used for other databases.

Though I hear you could just use a sed line to modify it back :)

Update version number to 5.1.4-alpha

into  mysql.com:/space/my/mysql-5.1

   (only showed up in a non-debug build)

into  neptunus.(none):/home/msvensson/mysql/mysql-5.1

into  mysql.com:/my/mysql-5.1

into  poseidon.ndb.mysql.com:/home/tomas/mysql-5.1-new

into  mysql.com:/home/my/mysql-5.1

into  mysql.com:/home/my/mysql-5.1-TDC

into  mysql.com:/my/mysql-5.1

Removed valgrind warnings when using not aligned bitmap buffer size
Added setting of thread_stack

into  mysql.com:/home/my/mysql-5.1-TDC