Fix out of bounds string assert in zl-gfx due to improper lower-casing of an std::string
Make the host log an error when a script fails to load rather than just silently failing
Fix MOAIFont crashing when trying to use a FreeTypeFont that failed to load
Merge pull request #984 from sclark39/miscfixes

MOAIFont crash fix, zl-gfx assert fix, and fix for silently failing to load the main script