[PATCH] unify all common build system parts

[Artem Bityutskiy]

On Wed, 2008-12-10 at 16:28 -0500, Mike Frysinger wrote:
> Rather than duplicating the same thing over and over in every Makefile, move
> it all to common.mk.
> 
> Other things fixed here:
>  - doing subdirs in parallel
>  - fix src!=build compiling in subdirs
> 
> Signed-off-by: Mike Frysinger <vapier at gentoo.org>

I've tried do test your patch and found an issue.

$ make
... build is ok ...
$ make install DESTDIR=/home/dedekind/tmp/
... error ...

Could you please take a look at this?

-- 
Best regards,
Artem Bityutskiy (Битюцкий Артём)