Bug 856067 - Fix Object Actor Previews. r=past
Bug 856067 - Fix up test_xrayToJS.xul. r=gabor
Bug 856067 - Waive Xrays when SpecialPowers encounters an Opaque XrayWrapper. r=gabor
Bug 856067 - Make unwaived non-Xrayable objects opaque from privileged code. r=gabor
Bug 856067 - Remove special case for content XBL scopes. r=gabor

This is now the default behavior. \o/
Bug 856067 - Add some helpful logging to the console when we deny access to a non-Xrayable object. r=gabor
Bug 856067 - Tests. r=me