Don't parallel make the gpxe directory.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
## -----------------------------------------------------------------------
##
## Copyright 2008-2009 H. Peter Anvin - All Rights Reserved
-## Copyright 2009 Intel Corporation; author: H. Peter Anvin
+## Copyright 2009-2011 Intel Corporation; author: H. Peter Anvin
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
installer:
+.NOTPARALLEL:
+
src/bin/blib.a:
$(PXEMAKE) bin/blib.a