Disable all assembly optimisation on SunOS rather than trying to play
catch-up with all the various flags each time.
Put module-oss back behind PLIST.oss, lost on recent update.
Fix CPP logic for the __APPLE__ case.  Fixes Darwin 32-bit build.
Fix build and install on Darwin 32-bit.
Has race conditions.
Fix PLIST for Python 2.6.
pkg-config is still needed.
Add SMF manifest, contributed by gzartman on GitHub.