Updated PKGBUILD. Fix orospakr/vrms-arch#1 and orospakr/vrms-arch#2 issues.

Updated PKGBUILD
- Add git to makedepends.
- Add pkgver function to respect VCS PKGBUILD guidelines.
- Change license directory to the default one.

Add a list containing naming variants of free licenses
- Fix orospakr/vrms-arch#1

Add a list of ambiguous packages (to be completed...)
- Fix orospakr/vrms-arch#2