WixBuild: Version 4.0.12.0

RobMen: Add version to schema namespaces.

RobMen: Move extension schema namespaces under "wxs" to align better with Simplified WiX.
        Update Simplified WiX namespaces to match changes "wxs" namespace.

RobMen: Fix bad old references to thmutil.xsd.

RobMen: More SxS'ification of folders, registry keys, etc.
        Fix Votive registration to correctly load in VS.
        Add Simplified WiX Toolset to binaries.zip

RobMen: Update WixCop to help with all namespace changes (including extensions).
        Update thmutil.xsd namespace to be consistent with other changes.

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