[gPXE-devel] make everything and friends

[Piotr Jaroszyński]

Hello,

this patchset adds an 'everything' target that builds multiple targets on each
supported arch/platform. Comes in handy when testing patches.

Also allows building all-drivers builds on platforms other than pcbios and
fixes a race in the buildsystem. Details in the commits.

gpxe: http://git.etherboot.org/?p=people/peper/gpxe.git;a=shortlog;h=refs/heads/buildall
ipxe: https://git.ipxe.org/people/peper/ipxe.git/shortlog/refs/heads/buildall

--
Piotr