GLCD.{h,cpp} renamed to GTFT.{h,cpp}
in examples: renamed GLCD to GTFT and LCDscreen to TFTscreen
renamed GTFT class and members
Merge branch 'renameGLCDToGTFT'

Conflicts (resolved, I hope):
	examples/Arduino/GLCDDisplayText/GLCDDisplayText.ino
	examples/Arduino/GLCDGraph/GLCDGraph.ino
	examples/Arduino/GLCDbouncingBall/GLCDbouncingBall.ino
	examples/Esplora/EsploraGLCDBouncingBall/EsploraGLCDBouncingBall.ino
	examples/arduino_lcd_test/arduino_lcd_test.ino
updated keywords.txt