[arch-dev-public] [signoff] pacman 3.3.0

Signoff for pacman/makepkg 3.3.0. Notable things: * once this goes in, we can officially start doing split packaging and build()/package() usage in our PKGBUILDs. * this is basically a signoff for libfetch too, and you can remove libdownload from your system. Allan (and others)- I added a carbon copy version of makepkg.conf to SVN. Do we want to establish (1) Arch LDFLAGS or (2) Arch integrity check policy? -Dan