python3: Fix "test_no_comdat_folding" disabling COMDAT folding.
python3: Fix "test_no_comdat_folding" disabling COMDAT folding.

Explicitly disable COMDAT folding. Note that this was not required
in the original "pcbuild.sln" solution file because it was side effect
of having "/Zi" flag set.

thewtex/python-cmake-buildsystem,jcfr/python-cmake-buildsystem,adrianbroher/python-cmake-buildsystem,python-cmake-buildsystem/python-cmake-buildsystem,thewtex/python-cmake-buildsystem,davidsansome/python-cmake-buildsystem