Fix a bad merge from merge 7580b5d.

May I enquire what features force a 2.8.11 minimum?  Does it vary between OSs?  (My GNU/Linux Debian stable Distro "Wheezy" is only at 2.8.9 and I've been looking through http://www.cmake.org/Wiki/CMake_Version_Compatibility_Matrix to try and pick out what the issues might be...)