Updating mbrola

[adr <adr%SDF.ORG@localhost>]

Mbrola is now in https://github.com/numediart/MBROLA and it's AGPL
at version 3.3. I'm making new packages of mbrola, mbrolavox-*,
&c. It's ok to push them in wip with the same names or you prefer
I use name-git for example?

Note that what you have in pkgsrc right now is a binary x86 package,
so it's only available in i386 and amd64 through emulation. This
new packages will make mbrola based voices usable by TTS synthesizers
like festival in other archs.

By the way, Is tech-pkg more appropriate for this?

Regards,
adr