libstagefright: Copy the entire buffer from/to OMX component

Presence of OMX extradata in buffers isn't reflected as part of
nFilledLen.  To avoid omitting the extradata, copy the entire buffer.

Change-Id: Ib310dda3dc93693d4ab380912a9997d7ea120be1
tf101: Skip NV OMX Plugin crash on Destroy

Fixes Netflix crash on opening
not deleting is better than crashing for the moment.

Change-Id: I4efeb9c37ec751f5b54fe5ea2d89cd31fcbcf3b7