[CMake] CMake 2.8.12-rc1 Released

[Clifford Yapp]

Just as a datapoint, the Ninja build of BRL-CAD when performed with
this version of CMake results in Ninja re-running CMake every time
before building.  Is anyone else seeing this behaviour?  I don't see
it with the 2.8.11.2 release.  Upgraded ninja to the latest github
build just to be sure I wasn't missing a Ninja feature, but seeing the
same behaviour - 2.8.11.2 doesn't re-run CMake, 2.8.12rc1 does.
Platform is Ubuntu Linux.

CY