Moved freetype dependency to optional font module
Fix ordering of include directory setting.
Made APR, Assimp, Freeimage, libsndfile and portaudio optional dependencies
Reorganization and cleanup of allocore build system
More small improvements and cleanup of build system
Better doxyfile. Include paths now include right prefixes.
Removed homebrew formula. The formula now lives in the homebrew-AlloSystem repo
Merge branch 'devel' of github.com:AlloSphere-Research-Group/AlloSystem into horizontal

Conflicts:
	CMakeLists.txt
	allocore/CMakeLists.txt
More simplification and reorganization of build system
Fixed MsgQueue memory deallocation.
Added initial version of alloaudio
Moved OpenGl and GLUT to separate optional modules.
Made OSC an optional module
Made zeroconf a module.
Fixed run.sh script
Merge branch 'horizontal' of github.com:AlloSphere-Research-Group/AlloSystem into alloaudio
Fixed assert
Implemented receiving and sending values via OSC
Added documentation
Merge branch 'devel' of github.com:AlloSphere-Research-Group/AlloSystem into horizontal

Conflicts:
	allocore/src/types/al_MsgQueue.cpp
Merge branch 'horizontal' of github.com:AlloSphere-Research-Group/AlloSystem into alloaudio