With contributions from Schaich Alonso <alonsoschaich@fastmail.fm>,
including stage support for devel/cmake-gui.
This update took much longer than expected due to CMake changing the
arguments to an internal macro that ended up being used by some ports:
http://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=9ce60ff5
I have also started a discussion about this on CMake's development list:
http://article.gmane.org/gmane.comp.programming.tools.cmake.devel/8464
It required adjusting the affected ports, and these changes have approved by
portmgr (bdrewery).
PR: ports/182981
Approved by: portmgr (bdrewery)
