Got rid of remaining Qt dependencies. The test framework should now be Qt-free
boostfs_relative_path was buggy, replaced with boostfs_uncomplete for now
update cmakelist for building tests in same dir as gui binary
Merge branch 'noqt' of ssh://ssh.github.com:443/openscad/openscad into noqt_tweaks
backport boost functions to pre-1.48
fix some bugs in wrapper of canonical()
update to match Marius' version
boost s/b >=1.48 not >1.48
more accurate help message
Merge pull request #313 from openscad/noqt_tweaks

Noqt tweaks
Bumped mpfr to 3.1.2
Updated dependencies
Merge branch 'noqt' into testing
Reinstate recursion guard to new context handling, fixes the last known subissue of #116 and #328