Better multilib enabling for pacman

Should only enable multilib if it is not already enabled and should
uncomment only the multilib lines. May need testing.
Merge remote-tracking branch 'upstream/master'

Conflicts:
	DDE_Fix.sh
Replace locate with find

Use find instead of locate since some distros dont install locate by
default.
Merge pull request #19 from bubylou/master

Use find instead of locate