Exclude the cmake .in.h file from the cmake target.

* feature/clean_3rd_cmake_macros:
  Add 3rd library cmake functions.
  Fix gpu cell type.
  Add public include directories.
  CMake: rename the directory variables in a consistent way.
  Remove redundant PointerDefinition file. Make the cmake project more flexible while removing the CMAKE_SOURCE_DIR usage.
  Remove all old unused cmake files.
  Update gitignore file.
  Fix cell type to unsigned int. Adapt basics CMakeLists according to develop.
  Adapt open_source basics to develop.
  Remove unnecessary files in basics.

# Conflicts:
#	CMake/VirtualFluidsMacros.cmake
#	CMakeLists.txt
#	apps/cpu/LidDrivenCavityCPU/CMakeLists.txt
#	apps/gpu/LidDrivenCavity/CMakeLists.txt
#	apps/gpu/LidDrivenCavity/LidDrivenCavity.cpp
#	cpu.cmake
#	gpu.cmake
#	src/basics/CMakeLists.txt
#	src/cpu/VirtualFluidsCore/CMakeLists.txt
#	src/cpu/VirtualFluidsCore/CoProcessors/WriteBoundaryConditionsCoProcessor.cpp
#	src/cpu/VirtualFluidsCore/CoProcessors/WriteBoundaryConditionsCoProcessor.h
#	src/cpu/VirtualFluidsCore/CoProcessors/WriteMacroscopicQuantitiesCoProcessor.cpp
#	src/cpu/VirtualFluidsCore/CoProcessors/WriteMacroscopicQuantitiesCoProcessor.h
#	src/gpu/GksGpu/CMakeLists.txt
#	src/gpu/GksMeshAdapter/CMakeLists.txt
#	src/gpu/GridGenerator/CMakeLists.txt
#	src/gpu/VirtualFluids_GPU/CMakeLists.txt
#	src/gpu/VirtualFluids_GPU/LBM/Simulation.h
#	src/gpu/VirtualFluids_GPU/Output/FileWriter.cpp
#	src/gpu/VirtualFluids_GPU/Parameter/Parameter.h

Merge pull request 'Add public target include directories to the cmake targets. Therefore the IncludeList.cmake files are not necessary anymore.' (#18) from peters/VirtualFluids_dev:feature/add_public_include_path into develop

Merge pull request 'feature/add_public_include_directories' (#17) from peters/VirtualFluids_dev:feature/add_public_include_directories into open_source

Add public target include directories to the cmake targets. Therefore the IncludeList.cmake files are not necessary anymore.
ADapt the export macros in the gks libraries.
Add 3rd/vtk helper cmake macro.
Gorup muparser into 3rd subfolder in visual studio project.

Merge pull request 'Adapt to develop basics.' (#16) from peters/VirtualFluids_dev:open_source into open_source

Merge pull request 'feature/unify_basic' (#15) from peters/VirtualFluids_dev:feature/unify_basic into develop

Make the cmake project more flexible while removing the CMAKE_SOURCE_DIR usage.

Make the cmake project more flexible while removing the CMAKE_SOURCE_DIR usage.

Remove the old write/read functions.

Merge pull request 'Move VirtualFluidsDefinitions into basics.' (#14) from peters/VirtualFluids_dev:develop into develop

* feature/fix_vf_definitions:
  Move VirtualFluidsDefinition into basics.

# Conflicts:
#	gpu.cmake

Merge pull request 'Move VirtualFluidsDefinition into basics.' (#12) from peters/VirtualFluids_dev:feature/fix_vf_definitions into open_source

Merge pull request 'Add missing export includes.' (#9) from peters/VirtualFluids_dev:feature/export_fix into develop

Merge pull request 'Increase required version to 3.18 and set the cmake policy CMPI0104 to NEW. Therefore the CMAKE_CUDA_ARCHITECTURES needs to be set.' (#8) from peters/VirtualFluids_dev:feature/cuda_policy into develop

Increase required version to 3.18 and set the cmake policy CMPI0104 to NEW. Therefore the CMAKE_CUDA_ARCHITECTURES needs to be set.