New port: sysutils/lockfile-progs

This package includes several programs to safely lock and unlock
files and mailboxes from the command line. These include:

lockfile-create
lockfile-remove
lockfile-touchlock
mail-lock
mail-unlock
mail-touchlock

These programs use liblockfile to perform the file locking and
unlocking, so they are guaranteed compatible with Debian's
file locking policies.

WWW: https://tracker.debian.org/pkg/lockfile-progs

PR: 224508
Submitted by: Yasuhiro KIMURA <yasu@utahime.org>