Added the ability to enable/disable frame rate logging for the ScreenDrawer.  Default is to not log.
Removed support for global mesh querying due memory leak issues.
Added support for specifying the horizontal and vertical tessellation resolution when tessellating a Sphere.
Removed unnecessary calculations.
Updated the TODO list in Launcher.
Chnaged test settings to determine if SAH would improve render time for procedural geometry.  20% performance gain observed.