rewrite the config parser

rewrite the config parser

Instead of a hand-tuned string compare functions that were needed
for every single config option, use a "real" parser to properly handle
key/value pairs.  This handles quoting of lines and other fun things.

Logic is based on code from udev, written by Kay Sievers, licensed under
the GPLv2+.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>