Merging VF CPU and GPU: Added gpu parts and moved into gpu/

README.md

gpu/CMakeLists.txt

gpu/CMakeMacros/Cuda/Link.cmake

gpu/CMakeMacros/OpenMP/Link.cmake

gpu/CMakeMacros/README.md

gpu/CMakeMacros/general/BuildTarget.cmake

gpu/CMakeMacros/general/BuildTargetUtilities.cmake

gpu/CMakeMacros/general/EndingsToCollect.cmake

gpu/CMakeMacros/general/FileUtilities.cmake

gpu/CMakeMacros/general/FindCompiler.cmake

gpu/CMakeMacros/git/GetGitRevisionDescription.cmake

gpu/CMakeMacros/git/GetGitRevisionDescription.cmake.in

gpu/COPYING.txt

gpu/Documentation/doxygen/VF_Doxyfile.dox

...Documentation/doxygen/VirtualFluidsLogo_lowResolution.png

gpu/readme.md

gpu/src/Core/ArrayTypes.h

gpu/src/Core/DataTypes.h

gpu/src/Core/LbmOrGks.h

gpu/src/Core/Logger/Logger.cpp