Fixed project build settings

I tried building on a machine that didn't have Visual Studio 2005 (I have 2010 and 2012) and ran into some compile errors that turned out to be related to include and library paths:
1. The environment variables defined in `build.cmd` were not automatically used and needed to be added to `dni.vsprops`.
2. The `CabLib` project had not been updated to use `dni.vsprops`, so it now does.