alsa-info: initial rpm/deb package info

alsa-info: initial rpm/deb package info

This might become a Pandora's box given
the amount of obscure package managers
on the planet but these two account for
most *nix-like systems with ALSA it seems.

Added support for querying ALSA packages
installed through rpm and dpkg; tested
on ALT (rpm) and OS Elbrus (dpkg).

Suggested-by: Anton Farygin <rider@altlinux.org>
See-also: http://bugzilla.altlinux.org/38416
Signed-off-by: Jaroslav Kysela <perex@perex.cz>