Fix string format security warnings and use correct header for case-sensitive file systems
Merge remote-tracking branch 'origin/version-3.0'
Add simple behavior to viewer

*had to rename enums because they clash with OpenGL macros
*viewer can only handle rgba.i so far
*viewer manually fixes range of int textures because glraw-cmd does not produce right output yet
Merge branch 'version-3.0' of https://github.com/hpicgs/glraw into version-3.0

Conflicts:
	include/glraw/RawConverter.hpp
	source/glraw-cmd/Conversions.cpp
	source/glraw-viewer/Canvas.cpp
	source/glraw/AbstractFileWriter.cpp
	source/glraw/RawConverter.cpp
Remove enums
Remove useless line