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
of an error in option handling. This can sometimes be useful in
scripts.
Changed some exit code names and corresponding numbers.
Fixed a bug in mysqld.cc, in replication related options.
Added a global flag in my_getopt, which can be set by any program
that is using my_getopt, which tells whether the client should
print the error message itself, or whether my_getopt should do it.
The default is that my_getopt will print the error messages.
mysqlmanager from using GNU getopt to use my_getopt.
Changed some files that just included old getopt.h to include
my_getopt.h now.
Fixed a bug in my_print_help() in my_getopt.c.
Made better documentation for option -G in mysql client.
