GLES2Dbg: added SETPROP expectResponse

To allow "stepping" in functions.
Also fix bug in reference frame.
Use reference frame for CopyTex(Sub)Image2D.

Change-Id: I70083200a1e911aaeb74ca85cb10bae16bd4db18
Signed-off-by: David Li <davidxli@google.com>
8 files changed