- Remove stupid stuff.
- Reorder imports so that default settings are gathered correctly.
Microsoft.Cpp.props needs to be imported after ConfigurationType and
UseDebugLibraries have been set because it does different stuff depending
on their values.
- Make all archs and confs use solution/bin/$conf. This was changed by
accident earlier.
- Change intermediate build directories to $arch-$conf form.
- Put libs in build/$arch-$conf-libs.
- Remove unnecessary options from individual confs.