added python to  linux dependencies
add  python bindings for  cgal and add  cgal and pycgal  to proteus on linux
Merge remote-tracking branch 'origin/master' into add_cgal_python

Conflicts:
	examples/proteus.linux2.yaml
Merge remote-tracking branch 'origin/master' into fix_boost
fixed library install
Merge branch 'fix_boost' into add_cgal_python
switched key/url order, switched to build_with python instead of python dep.
Update proteus.linux2.yaml

removed cgal from default profile
Merge pull request #512 from hashdist/cekees/add_cgal_python

cekees/add cgal python