mysql-5.0 had been removed from pkgsrc.
sync with Makefile (MySQL-5.0 had been dropped).
MySQL-5.0 had been removed from pkgsrc, change to accept any version of mysql.
accept MySQL-5.6 additionally, and remove dropped MySQL-5.0 support.
sort
fixes build with GIFLIB-5.x.
C extensions are not supported on py3k.
fixes build
* C++ is also used
* pass MAKE_ENV to build