gbuild: MSVC avoid a warning from pyuno...
gbuild: MSVC avoid a warning from pyuno...

... which is caused by CPython's crazy naming convention that python
module DLLs need to have .pyd suffix, so substitute that too when
generating .pdb and .ilk filenames.

Change-Id: Iaba9bdfb4c67d5fca016a0552e5ce9b0bdeb12ea

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core