lirc-tools: new package

This package adds the userspace tools and daemons LIRC - Linux remote
control

[Thomas:
 - rewrap Config.in help text, lines were too long. And do a bit of
   rewording also.
 - remove trailing whitespaces in Config.in.
 - make sure Config.in is included from package/Config.in, otherwise
   the package is not visible.
 - use a full destination path when installing the sysv init script.
 - add dependency on BR2_USE_MMU, since fork() is used.
 - fix init script: use -n option to not daemonize since
   start-stop-daemon is already doing that, use 'mkdir -p' and 'ln
   -sf' to make the 'start' action re-executable.]

Signed-off-by: Rhys Williams <github@wilberforce.co.nz>
Reviewed-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>