[pacman-dev] GPG work

I did quite a bit more work with GPG today. I wrapped my head around GPGME, which presents a nice C interface to the GPG stuff so we are now a lot closer to a working implementation: http://code.toofishes.net/gitweb.cgi?p=pacman.git;a=shortlog;h=refs/heads/ne...

From the script side of things, I didn't change much. The libalpm code has changed considerably, and there is still a lot of room for improvement. Let me know if you guys have questions.

-Dan