Almost 3 years in the making, GUI elements now play sounds.

--HG--
rename : examples/GUI/testGUI.data/sounds/ButtonClick.mp3 => examples/GUI/testGUI.data/sounds/button_down.mp3
rename : examples/GUI/testGUI.data/sounds/ButtonClick.ogg => examples/GUI/testGUI.data/sounds/button_down.ogg
rename : examples/GUI/testGUI.data/sounds/ButtonClick.wav => examples/GUI/testGUI.data/sounds/button_down.wav
Added defaults to some XML attributes in DiddyData.  Should fix issue 34.
Added GLText Module (Android only) - Loads TTF fonts for Android
"Fixed" Matrix commands for GLText
Merge