must use items b/c iteritems is removed in python 3
document python util methods

Conflicts:
	wrappers/Python/roadrunner/PyUtils.cpp
	wrappers/Python/roadrunner/PyUtils.h
add more documentation to python util
added myself as author in doxygen page
Use PY_MAJOR_VERSION instead of RR_PYTHON_VERSION

Conflicts:
	wrappers/Python/roadrunner/PyUtils.cpp
remove extraneous cmake comments / warnings

Conflicts:
	CMakeLists.txt
	source/CMakeLists.txt
remove RR_PYTHON_VERSION from generated header, use PY_MAJOR_VERSION instead