Merge remote-tracking branch 'qatar/master'

* qatar/master:
  rational-test: Add proper main() declaration to fix gcc warnings.
  configure: Add vdpau and dxva2 to configure results output.
  Remove unused, never built libavutil/pca.[ch]
  matroskadec: forward parsing errors to caller.
  av_find_stream_info: simplify EAGAIN handling.
  aacenc: Fix determination of Mid/Side Mode.
  psymodel: Remove the single channel analysis function
  aacenc: Implement dummy channel group analysis that just calls the single channel analysis for each channel.
  psymodel: Add channels and channel groups to the psymodel.
  ARM: remove check for PLD instruction
  fate: move amr[nw]b test rules into separate files
  ogg: fix double free when finding length of small chained oggs.
  swscale: implement >8bit scaling support.
  build: fix creation of tools dir with make 3.81
  build: Mark all-yes Makefile target as phony.
  pixfmt: fix YUV422/444 wrong endian comment
  build: create output directories as needed
  Add new yuv444 pixfmts to avcodec_align_dimensions2

Conflicts:
	Makefile
	configure
	libavutil/pca.c
	libavutil/pca.h
	libavutil/pixfmt.h
	libswscale/swscale.c
	libswscale/utils.c
	libswscale/x86/swscale_template.c
	tests/ref/lavfi/pixdesc
	tests/ref/lavfi/pixfmts_copy
	tests/ref/lavfi/pixfmts_null
	tests/ref/lavfi/pixfmts_scale
	tests/ref/lavfi/pixfmts_vflip

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

libavformat/utils.c

@@ -2345,7 +2345,10 @@ int av_find_stream_info(AVFormatContext *ic)
         /* NOTE: a new stream can be added there if no header in file
            (AVFMTCTX_NOHEADER) */
         ret = av_read_frame_internal(ic, &pkt1);
-        if (ret < 0 && ret != AVERROR(EAGAIN)) {
+        if (ret == AVERROR(EAGAIN))
+            continue;
+
+        if (ret < 0) {
             /* EOF or error */
             ret = -1; /* we could not have all the codec parameters before EOF */
             for(i=0;i<ic->nb_streams;i++) {
@@ -2361,9 +2364,6 @@ int av_find_stream_info(AVFormatContext *ic)
             break;
         }
 
-        if (ret == AVERROR(EAGAIN))
-            continue;
-
         pkt= add_to_pktbuf(&ic->packet_buffer, &pkt1, &ic->packet_buffer_end);
         if ((ret = av_dup_packet(pkt)) < 0)
             goto find_stream_info_err;