Find the correct boost lib for the python version used.
Merge branch 'master' of https://github.com/est77/appleseed
Merge upstream.
Merge branch 'master' of https://github.com/est77/appleseed
Exposed logging to python.
More python logging work.
Merge remote-tracking branch 'upstream/master'
Merge branch 'master' of https://github.com/est77/appleseed
Lock python in ILogTarget python subclasses.
Merged upstream
Merge branch 'master' of https://github.com/est77/appleseed
Merge branch 'master' into python_logging
Merge pull request #252 from est77/python_logging

Expose logging in python bindings