Revision 3564 improved compilation time, but it also introduced a

dependency bug which hit people running parallel make instances.

With our current makefile architecture, the "right" fix is impossible.
However, we can still kill the race conditions leading to arbitrary
compilation failures. That trick depends on the atomicity of the mv
command.

Extensive comments explain what the workaround does.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3663 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

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