Last minute fixes

Fedora package is looking pretty good.  Uncovered a few problems while packaging it up.

- The precise workaround breaks on Fedora.  This fix may break on some Debian that correspods to Precise, but I'm not quite able to test yet...

- Finally fixed that race condition you found that prevents building with -j2, or -j16 in your case.

- Fixed the system installation location of files in $RTDIR