added Archlinux PKGBUILD's:
- PKGBUILD-git:
  - pkgver() function from pacman 4.1 better pkg version
  - vcs function from pacman 4.1
- PKGBUILD
  - just snatch from aur.archlinux.com
Merge pull request #536 from aboe76/archlinux_pkgbuilds

added Archlinux PKGBUILD's: