CMake: throw on OgreAssert in Release builds by default
CMake: throw on OgreAssert in Release builds by default

we need this for asserts to work in RelWithDebinfo configuration.
Also this gives us a backtrace in python instead of just instantly
crashing the interpreter.
paroj/ogre,OGRECave/ogre,paroj/ogre,paroj/ogre,paroj/ogre,paroj/ogre,OGRECave/ogre,OGRECave/ogre,OGRECave/ogre,OGRECave/ogre