Begin working on adding separate bitfield groups
Merge branch 'review_and_refinement' of https://github.com/scheibel/glbinding into review_and_refinement

Conflicts:
	codegeneration/scripts/gen_bitfields.py
	codegeneration/scripts/gen_functions.py
	codegeneration/scripts/templates/bitfield.h.in
	source/glbinding/include/glbinding/featured/bitfield10.h
	source/glbinding/include/glbinding/featured/bitfield11.h
	source/glbinding/include/glbinding/featured/bitfield12.h
	source/glbinding/include/glbinding/featured/bitfield13.h
	source/glbinding/include/glbinding/featured/bitfield14.h
	source/glbinding/include/glbinding/featured/bitfield15.h
	source/glbinding/include/glbinding/featured/bitfield20.h
	source/glbinding/include/glbinding/featured/bitfield21.h
	source/glbinding/include/glbinding/featured/bitfield30.h
	source/glbinding/include/glbinding/featured/bitfield31.h
	source/glbinding/include/glbinding/featured/bitfield32.h
	source/glbinding/include/glbinding/featured/bitfield32core.h
	source/glbinding/include/glbinding/featured/bitfield33.h
	source/glbinding/include/glbinding/featured/bitfield33core.h
	source/glbinding/include/glbinding/featured/bitfield40.h
	source/glbinding/include/glbinding/featured/bitfield40core.h
	source/glbinding/include/glbinding/featured/bitfield41.h
	source/glbinding/include/glbinding/featured/bitfield41core.h
	source/glbinding/include/glbinding/featured/bitfield42.h
	source/glbinding/include/glbinding/featured/bitfield42core.h
	source/glbinding/include/glbinding/featured/bitfield43.h
	source/glbinding/include/glbinding/featured/bitfield43core.h
	source/glbinding/include/glbinding/featured/bitfield44.h
	source/glbinding/include/glbinding/featured/bitfield44core.h
	source/glbinding/include/glbinding/featured/functions14.h
Fix python script