be overridden via an environment variable) rather than OS_ARCH.
This is a precursor to more flexibility in cross-platform builds.
Bug 104541.
git-svn-id: svn://10.0.0.236/trunk@114608 18797224-902f-48f8-a5cc-f745e15eee43
setup up map files so the can be switched on simply by adding a directive to
manifest.mn.
git-svn-id: svn://10.0.0.236/trunk@107611 18797224-902f-48f8-a5cc-f745e15eee43