Bugfix - png is the last arg + some better error output
Pass full path to python script
Allow other files than .scad as input
Report boost version, don't add BOOST_FILESYSTEM_VERION for recent boost versions
Refactored the camera handling a bit, added --viewall cmd-line parameter
Merge remote-tracking branch 'origin/master' into test3dexport

Conflicts:
	src/CGALRenderer.h
	src/Camera.h
	src/GLView.cc
	src/export_png.cc
	tests/CMakeLists.txt