Windows 8 build 7973 (fbl srv wdacxml)

Windows 8 build 7973 (winmain) is an unleaked Windows 8 build. Only two desktop shots and part of an "About Windows" box has been shown of this build. However, the "About Windows" screenshot of this build is confirmed to be fake because it has the same hash ID as 7973.fbl_core1_kernel_npc.110330-1809, although the buildtag and possibly the two desktop screenshots are real.