This fixes a race condition (revealed by my other check-in r4067) in the

This fixes a race condition (revealed by my other check-in r4067) in the
romtool by changing the Makefiles to be no longer recursive (once again,
recursive make is to be considered harmful).  Tried to (quickly) unify most of
the Makefile code, but medium-term this is going to be worked on for Kconfig
support anyways.

Also fix a sign cast error in rom-mkpayload in case people want to compile this
with -W -Werror

Patch relative to coreboot-v2/util/romtool

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
and
Acked-by: Stefan Reinauer <stepan@coresystems.de>
in order to get the tree working decently asap

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4069 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1