Call pthread_mutex_destroy() on not used mutex.
Changed comments in .h and .c files from // -> /* */
Added detection of mutex on which one didn't call pthread_mutex_destroy()
Fixed bug in create_tmp_field() which causes a memory overrun in queries that uses "ORDER BY constant_expression"
Added optimisation for ORDER BY NULL
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.
This wrapper noew will include all the necessary, system specific files,
which makes all normal source files much easier to write and maintain.
Portability fixes.
