• Resuccrect `x11-wm/musca' and provide new distfile home
• Reword COMMENT and port description, update WWW: line
• Adopt several patches from Gentoo Linux, including the Makefile (now requires USES+=pkgconfig)
• Define LICENSE (GPLv3), unmute the installation command

References:

https://bugs.archlinux.org/task/25232
https://bugs.launchpad.net/musca/+bug/816890
https://bugs.launchpad.net/musca/+bug/1236500