Initial check-in of libsystem/ using Libsystem-50.tar.gz (2001-04-11, mac-os-x-100)

Source: http://opensource.apple.com/tarballs/Libsystem/Libsystem-50.tar.gz
SHA-1: 4480eccad3816f8a2dabfc82f4ab49581cfb1bec
OS X Release: mac-os-x-100 (source release #001)
File Modification Timestamp (Oldest): 2001-04-11 00:35:52
File Modification Timestamp (Newest): 2001-04-11 00:35:53