Description of problem:
When using the ninja generator in cmake 2.8.8+ cmake looks for "ninja", which the ninja-build package for fedora 16+ uses the binary ninja-build so as to not conflict with the ninja irc client.

Version-Release number of selected component (if applicable):
cmake-2.8.8-4.fc16 - cmake-2.8.10.2-1.fc18

How reproducible:
everytime

Steps to Reproduce:
1. in a project source dir w/ CMakeLists.txt
2. cmake -G Ninja .
  
Actual results:

Couldn't find ninja

Expected results:

it to "know to use" ninja-build

Additional info:

A workaround is to pass -DCMAKE_MAKE_PROGRAM=ninja-build

The patch would be to modify Source/cmGlobalNinjaGenerator.cxx around line 1037 (ninjaCmd() method).  and change the return from

return "ninja";

to 

return "ninja-build";