Add option to compile (external) schema by cmake

win/run-cmake.bat

@@ -56,6 +56,7 @@ if not defined PY_VER_MAJOR_MINOR set PY_VER_MAJOR_MINOR=34
 if not defined PYTHONPATH set PYTHONPATH=%INSTALL_DIR%\Python%PY_VER_MAJOR_MINOR%
 set PYTHON_INCLUDE_DIR=%PYTHONPATH%\include
 set PYTHON_LIBRARY=%PYTHONPATH%\libs\python%PY_VER_MAJOR_MINOR%.lib
+set PYTHON_EXECUTABLE=%PYTHONPATH%\python.exe
 set SWIG_DIR=%INSTALL_DIR%\swigwin
 set PATH=%PATH%;%SWIG_DIR%;%PYTHONPATH%
 :: TODO 3ds Max SDK?
@@ -77,6 +78,7 @@ echo    OPENCOLLADA_LIBRARY_DIR = %OPENCOLLADA_LIBRARY_DIR%
 echo    PYTHONPATH              = %PYTHONPATH%
 echo    PYTHON_INCLUDE_DIR      = %PYTHON_INCLUDE_DIR%
 echo    PYTHON_LIBRARY          = %PYTHON_LIBRARY%
+echo    PYTHON_EXECUTABLE       = %PYTHON_EXECUTABLE%
 echo    SWIG_DIR                = %SWIG_DIR%
 echo.
 echo    CMAKE_INSTALL_PREFIX    = %CMAKE_INSTALL_PREFIX%