ubershader not singleton anymore, but hold per pipeline
workaround for nurbs bug
increased fixed tesselation
fixed nurbsshader for windows due to limited raw string literals
fixed unix line endings
Merge branch 'scholli-build' into scholli-merge

Conflicts:
	cmake/modules/FindBullet.cmake
	include/gua/renderer/GeometryRessource.hpp
	include/gua/renderer/NURBSRessource.hpp
	include/gua/renderer/Pipeline.hpp
	include/gua/renderer/TriMeshRessource.hpp
	include/gua/renderer/Video3DRessource.hpp
	include/gua/renderer/Video3DUberShader.hpp
	include/gua/renderer/Volume.hpp
	src/gua/renderer/NURBSRessource.cpp
	src/gua/renderer/TriMeshRessource.cpp
	src/gua/renderer/Video3DLoader.cpp
	src/gua/renderer/Video3DRessource.cpp
	src/gua/renderer/Video3DUberShader.cpp
	src/gua/scenegraph/Video3DNode.cpp
Change get_ubershader to create_ubershader.
Merge branch 'develop' of https://github.com/vrsys/guacamole into develop

Conflicts:
	cmake/modules/FindBullet.cmake
	include/gua/renderer/GeometryRessource.hpp
	include/gua/renderer/NURBSRessource.hpp
	include/gua/renderer/Pipeline.hpp
	include/gua/renderer/TriMeshRessource.hpp
	include/gua/renderer/Video3DRessource.hpp
	include/gua/renderer/Video3DUberShader.hpp
	include/gua/renderer/Volume.hpp
	src/gua/renderer/NURBSRessource.cpp
	src/gua/renderer/TriMeshRessource.cpp
	src/gua/renderer/Video3DLoader.cpp
	src/gua/renderer/Video3DRessource.cpp
	src/gua/renderer/Video3DUberShader.cpp
	src/gua/scenegraph/Video3DNode.cpp
bugfix for trimesh instantiation
port of find protbuf
Merge branch 'develop' of https://github.com/scholli/guacamole into scholli-merge

Conflicts:
	cmake/modules/FindBullet.cmake
	include/gua/renderer/TriMeshRessource.hpp
	include/gua/renderer/Video3DRessource.hpp
	include/gua/renderer/Video3DUberShader.hpp
	include/gua/renderer/Volume.hpp
	src/gua/renderer/NURBSRessource.cpp
	src/gua/renderer/Video3DLoader.cpp
	src/gua/renderer/Video3DRessource.cpp
	src/gua/renderer/Video3DUberShader.cpp
	src/gua/scenegraph/Video3DNode.cpp
Make protobuf optional.
Merge branch 'scholli-merge' into develop