MyPythonWrappers dir is set in my account environment variable PYTHONPATH

Commands to reproduce.

for gcc

```
# gcc
cd <root_dir>/Demo/Demo/src/Py
cp .\CMakeLists_gcc.txt .\CMakeLists.txt
cmake . -G "MinGW Makefiles" -DCMAKE_CXX_COMPILER=g++ -DCMAKE_C_COMPILER=gcc -B../../build_gcc
cd ..\..\build_gcc\
cmake --build . --target install -- --no-print-directory
cd ..\..\DemoPy\src\DemoPy\
python .\CallAddXY.py
```

output:
> import Py_Release as Py\
ImportError: DLL load failed while importing Py_Release: The specified module could not be found.

for msvc

```
#msvc
cd <root_dir>/Demo/Demo/src/Py
cp .\CMakeLists_msvc.txt .\CMakeLists.txt
cmake . -G "NMake Makefiles" -DCMAKE_CXX_COMPILER=cl -DCMAKE_C_COMPILER=cl -B../../build_msvc
cd ..\..\build_msvc\
cmake --build . --target install
cd ..\..\DemoPy\src\DemoPy\
python .\CallAddXY.py
```

output:
> Testing AddXY(42,314), expecting 356\
Calling AddXY from C++\
356