Fixed font errors, updated Ruby and Allegro

- Ruby updated to 2.0.0-p247
- Allegro updated to 5.0.10
- Added new color blending modes: RAGE::Graphics::BLEND_SRC_COLOR,
RAGE::Graphics::BLEND_DEST_COLOR, RAGE::Graphics::BLEND_INV_SRC_COLOR,
RAGE::Graphics::BLEND_INV_DEST_COLOR
- Added RAGE::Bitmap.isSub() and RAGE::Bitmap.getParent()
- Keyboard and mouse event processing is not done automatically anymore.
Keyboard and mouse events are not processed by default, use
RAGE::Events.processKeyboard(true) and/or
RAGE::Events.processMouse(true) to set their processing.
- fixed RAGE::IniFile.create, no argument needed for its creation.
- RAGE::Bitmap.setPixel now accepts alpha.