Merge remote-tracking branch 'qatar/master'

* qatar/master: (46 commits)
  mtv: Make sure audio_subsegments is not 0
  v4l2: use V4L2_FMT_FLAG_EMULATED only if it is defined
  avconv: add symbolic names for -vsync parameters
  flvdec: Fix compiler warning for uninitialized variables
  rtsp: Fix compiler warning for uninitialized variable
  ulti: convert to new bytestream API.
  swscale: Use standard multiple inclusion guards in ppc/ header files.
  Place some START_TIMER invocations in separate blocks.
  v4l2: list available formats
  v4l2: set the proper codec_tag
  v4l2: refactor device_open
  v4l2: simplify away io_method
  v4l2: cosmetics
  v4l2: uniform and format options
  v4l2: do not force interlaced mode
  avio: exit early in fill_buffer without read_packet
  vc1dec: fix invalid memory access for small video dimensions
  rv34: fix invalid memory access for small video dimensions
  rv34: joint coefficient decoding and dequantization
  avplay: Don't call avio_set_interrupt_cb(NULL)
  ...

Conflicts:
	Changelog
	avconv.c
	doc/APIchanges
	doc/indevs.texi
	libavcodec/adxenc.c
	libavcodec/dnxhdenc.c
	libavcodec/h264.c
	libavdevice/v4l2.c
	libavformat/flvdec.c
	libavformat/mtv.c
	libswscale/utils.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>

libpostproc/postprocess_template.c

@@ -2470,7 +2470,7 @@ static av_always_inline void RENAME(do_a_deblock)(uint8_t *src, int step, int st
     int64_t dc_mask, eq_mask, both_masks;
     int64_t sums[10*8*2];
     src+= step*3; // src points to begin of the 8x8 Block
-//START_TIMER
+    //{ START_TIMER
     __asm__ volatile(
         "movq %0, %%mm7                         \n\t"
         "movq %1, %%mm6                         \n\t"
@@ -2995,7 +2995,8 @@ static av_always_inline void RENAME(do_a_deblock)(uint8_t *src, int step, int st
     STOP_TIMER("step16")
 }else{
     STOP_TIMER("stepX")
-}*/
+}
+    } */
 }
 #endif //HAVE_MMX