Made a some new buffers thread specific and changeable.
Resize of key_buffer.
AUTO_COMMIT -> AUTOCOMMIT
Fixed mutex bug in DROP DATABASE
Fixed bug when using auto_increment as second part of a key where first part could include NULL.
Split handler->extra() to extra() and extra_opt() to be able to support thread specific buffers.
Don't write message to error log when slave reconnects becasue of timeout.
Fixed possible update problem when using DELETE/UPDATE on small tables
(In some cases we used index even if table scanning would be better)
A lot of minior code cleanups
Speed up column-completion in 'mysql'
Don't use ISAM if HAVE_ISAM is not defined
A lot of fixes for the embedded version. All libraries are now included in libmysqld.a
Changed arguments to convert_dirname() to make it more general.
Renamed files in the 'merge' directory to all use a common prefix.
Don't compile both assembler and C functions on x86
Fixes for embedded server
Made key_cache more configurable
Fixed that one can change key blocksize in MyISAM
A lot of optimizations to make MyISAM slightly faster
mysql test suite.
A few minor libmysqld fixes.
Add mysql_server_init() and _end() to mysql.cc and mysqltest.c, so they
can be linked against libmysqlclient or libmysqld.
There is now a mysql_server_init() function which needs to be
called at the beginning of the program (and _end() for the end
of the program). This routine handles argument parsing for the
embedded server.
Use the embedded version of mysql_load_file() (ignore the LOCAL
argument, since the client and server are the same program).
There are now mysql_thread_init/end() functions for the client
to use in a multi-threaded app. They are just wrappers for
my_thread_init/end().
