Add back dataAccess method

OPD uses it in the access code below. PDroid2.0 has changed to a much simpler and more
elegant implementation, but I need to see why wsot added this code before I nuke it.

Conflicts:
	core/java/android/hardware/Camera.java
SystemProperties: Add BEGIN/END PRIVACY around unmarked additions
MediaRecorder: Fix syntax error breaking file (#2)

We were missing a closed quote, introduced 9ba82976476de67131204d018f2cf47d7f7aed12