WixBuild: Version 3.8.225.0

RobMen: Add EndSession, TerminateProcess and Timeout attributes to CloseApplications.

RobMen: Support transparent .pngs for Images in thmutil.

RobMen: SFBUG:3216 - fix build to handle multiple platform SDK include paths.

RobMen: WiX v3.8

WixBuild: Version 3.8.0.0