[MPlayer-dev-eng] [PATCH] use correct type of timestamps when recording from v4l2, fix #2176

Mencoder should detect whether timestamps used by v4l2 come from monotonic or realtime clock. This is important for Linux kernels >=3.10. Details in bug report #2176 [1] Patch for stream/tvi_v4l2.c against r36970 attached. [1] https://trac.mplayerhq.hu/ticket/2176