The commandline parsing for abuild doing a couple of buggy things:

The commandline parsing for abuild doing a couple of buggy things:
* Long options of the form --opt=arg were not having the arg stripped
  off into a another argument in the output. As a result, all long
  options with args had to be written like "--opt arg" on the command
  line to be recognized.
* The --remove option was shifting too many times.

As a bonus, I also added some logic to make "make distclean" cleanup
the default abuild build dir.

Signed-off-by: Warren Turkal <wt@penguintechs.org>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5869 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1