[CMake] Ninja generator is Linux-only?

[Clifford Yapp]

Taking a quick look around, here's what I'm seeing:

Current unresolved Ninja issues that are filed in the bug tracker:

http://public.kitware.com/Bug/view.php?id=13067
http://public.kitware.com/Bug/view.php?id=13073
http://public.kitware.com/Bug/view.php?id=13145
http://public.kitware.com/Bug/view.php?id=13158
http://public.kitware.com/Bug/view.php?id=13159
http://public.kitware.com/Bug/view.php?id=13105
http://public.kitware.com/Bug/view.php?id=13069

There also appears to be a lot of dev activity/discussion taking place:

http://public.kitware.com/pipermail/cmake-developers/2012-April/003782.html
http://public.kitware.com/pipermail/cmake-developers/2012-April/003787.html
http://public.kitware.com/pipermail/cmake-developers/2012-May/004011.html
http://public.kitware.com/pipermail/cmake-developers/2012-April/003878.html