[OGRE-378] Unable to build when using MinGW without samples.
[OGRE-378] Unable to build when using MinGW without samples.

--HG--
branch : v1-9

jhu-lcsr-forks/ogre,jhu-lcsr-forks/ogre,jhu-lcsr-forks/ogre,jhu-lcsr-forks/ogre,jhu-lcsr-forks/ogre