[aur-general] Consolidation of ALAC

After adopting alacconvert and libalac, I decided that they should be handled as one (split) pkg, so if someone could please merge: alacconvert: https://aur.archlinux.org/packages.php?ID=53497 libalac: https://aur.archlinux.org/packages.php?ID=53480 into alac: https://aur.archlinux.org/packages.php?ID=59613