Improve support for different Python versions, including boost_numpy

Author: acasta69

README.txt

@@ -26,6 +26,10 @@ paste it in the command prompt via right click -> paste)
 The first run of the build process will take around 20 minutes 
 (depending on your CPU) and the linking process may consume a lot of RAM.
 
+Default build will use Python 3.5, the version embedded in Blender 2.79b.
+You can add an option to specify the version of your choice among 3.5, 3.6, 3.7, e.g.:
+.\cmake-build-x64.bat /python36
+
 The compiled binaries are in Build_CMake\LuxCore\bin\Release\
 The pyluxcore.pyd binary is in Build_CMake\LuxCore\lib\Release
 You can run the script collect-compiled-binaries.bat to collect them.

cmake-build-x64.bat

@@ -100,7 +100,7 @@ if %BUILD_DLL% EQU 1 (
   set DLL_OPTION=
 )
 
-set CMAKE_OPTS=-G %CMAKE_GENERATOR% %CMAKE_PLATFORM% %CMAKE_TOOLSET% -D CMAKE_INCLUDE_PATH="%INCLUDE_DIR%" -D CMAKE_LIBRARY_PATH="%LIB_DIR%" -D PYTHON_LIBRARY="%LIB_DIR%" -D PYTHON_V="python%PYTHON_VERSION%" -D PYTHON_INCLUDE_DIR="%INCLUDE_DIR%\Python%PYTHON_VERSION%" -D CMAKE_BUILD_TYPE=%BUILD_TYPE% %OCL_OPTION% %DLL_OPTION%
+set CMAKE_OPTS=-G %CMAKE_GENERATOR% %CMAKE_PLATFORM% %CMAKE_TOOLSET% -D CMAKE_INCLUDE_PATH="%INCLUDE_DIR%" -D CMAKE_LIBRARY_PATH="%LIB_DIR%" -D PYTHON_LIBRARY="%LIB_DIR%" -D PYTHON_V="%PYTHON_VERSION%" -D PYTHON_INCLUDE_DIR="%INCLUDE_DIR%\Python%PYTHON_VERSION%" -D CMAKE_BUILD_TYPE=%BUILD_TYPE% %OCL_OPTION% %DLL_OPTION%
 rem To display only errors add: /clp:ErrorsOnly
 set MSBUILD_OPTS=/nologo /maxcpucount /verbosity:normal /toolsversion:15.0 /property:"Platform=%MSBUILD_PLATFORM%" /property:"Configuration=%BUILD_TYPE%" /p:WarningLevel=0