Pam-mysql fork from source forge with some fix

Pam-mysql seems to be unmaintained, so i decided to provide some fixes.

• Memory leak error | Fixed
• SHA1 and MD5 encryption | Fixed

Compilation

$ ./configure --with-cyrus-sasl2 --with-openssl
$ make
$ make install 

Compiled files can be found here :

/lib/security/pam_mysql.so
/lib/security/pam_mysql.la

Enable SHA1 and MD5 encryption

Thanks to : https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=418500#50

Memory leak - error output before fix

Thanks to : http://sourceforge.net/p/pam-mysql/bugs/27/#c2aa

Can t initialize threads: error 11
AUTH-PAM: BACKGROUND: user 'xxx' failed to authenticate: Permission denied