GCC-4.8+ Build Fix

Change-Id: I7697eebc277dc08458529ac056a822132c4610e6

Conflicts:
	gki/Android.mk
	main/Android.mk
Update Android.mk

Fix compatibility with all toolchains. Not all gcc versions know about the unused-parameter warning.
Update Android.mk

Fix compatibility with all toolchains.  Not all gcc versions are compatible with the unused-parameter warning.