WixBuild: Version 4.0.4.0

RobMen: Introducing Simplified WiX Toolset.

RobMen: Rename "Windows Installer Xml Toolset" to "WiX Toolset".
        Improve support for building WiX Toolset with VS2012.
        Continue to fix namespace breaking changes.

RobMen: Change namespaces to prepare for breaking changes.

RobMen: WiX v4.0