Update Windows compiler to Visual Studio 2013

Modify Windows build script and project files
	from Visual Studio 2010 to Visual Studio 2013.
Initialize (as needed) pointers to NULL before they're used.
Incorporate unit++ static library into the Windows build process.
Clean up unnecessary elements in unit++ target in Windows.targets
Remove unused Lib/src/build.bat

Change-Id: Id61bdf5852b920c1adf47a7619c732aca1e1e764