Sort FIND_PACKAGEs and force dependency on libintl.

This commit was created by Partmedia, someone who dropped into the source of tales irc channel and wanted to compile mana for FreeBSD 9.1

The changes as of that commit help out for Freebsd, but for Ubuntu we'd need to remove the dependency ```LibIntl```

This pull request is not yet ready for merging, feel free to contribute.