Correction for the fix for Bug 3508 - Persistent storage support breaks Linux compatibility.
A 2nd `make install' will fail attempting to create symlink libnvmemmory.so already created by 1st install.
Install should pre-emptively delete it.
@rem Used by the buildbot "clean" step.
call "%VS90COMNTOOLS%\..\..\VC\vcvarsall.bat" x86_amd64
cd PCbuild
@echo Deleting .pyc/.pyo files ...
del /s Lib\*.pyc Lib\*.pyo
vcbuild /clean pcbuild.sln "Release|x64"
vcbuild /clean pcbuild.sln "Debug|x64"