changed to MIT License
*	modified:   COPYING
*	modified:   README.md
*	modified:   doc/mainpage.c
*	modified:   ghmysql.c
*	modified:   ghmysql.h
*	modified:   lib_mysqludf_preg_capture.c
*	modified:   lib_mysqludf_preg_check.c
*	modified:   lib_mysqludf_preg_info.c
*	modified:   lib_mysqludf_preg_position.c
*	modified:   lib_mysqludf_preg_replace.c
*	modified:   lib_mysqludf_preg_rlike.c
*	modified:   preg.c
*	modified:   preg.h
*
*	new file:   LICENSE
*	modified:   README.md