Add DOS cross-compilation support to the Makefile. Add a README with build instructions. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Rudolf Marek <r.marek@assembler.cz> git-svn-id: svn://coreboot.org/flashrom/trunk@963 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1