Importing usr.bin/calendar

No Minix-specific changes needed.

Change-Id: I9e68983104efb20ab8e946df3bce189d99ab2deb
Importing lib/libmenu

No Minix-specific changes needed.

Change-Id: Ifab9a44bd401aebf99ab019697937620d88d47de
Importing lib/libform

No Minix-specific changes needed.

Change-Id: Ia8ddbdb57ac04dfb42d79c374b9e25b189f9dc3b