Ghostscript possibly has a conflict when building with multiple cores

cp: cannot create regular file `./obj/gconfig.h': File exists
http://lists.openembedded.org/pipermail/openembedded-core/2012-March/059110.html
http://git.yoctoproject.org/cgit.cgi/poky/plain/meta/recipes-extended/ghostscript/ghostscript/ghostscript-9.02-parallel-make.patch

Could be fixed in 9.07 tho