dump1090: update to latest version, add init script and config.

Signed-off-by: Roger D <rogerdammit@gmail.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
libmpdclient: Add patch for musl libc compatibility (from upstream repo)

Signed-off-by: Ted Hess <thess@kitschensync.net>