Merge remote-tracking branch 'qatar/master'

* qatar/master:
  smacker: Sanity check huffman tables found in the headers.
  smacker: remove dead store
  qdm2: Check data block size for bytes to bits overflow.
  mxfdec: Fix files with essence containers larger than 2 GiB.
  mxfdec: Employ correct printf conversion specifiers for POSIX int types.
  vc1: always read the bfraction element for interlaced fields
  fate: add XWD image regression test
  lavf: prevent infinite loops while flushing in avformat_find_stream_info
  matroskadec: Pad AAC extradata.
  ismindex: Fix build on mingw

Conflicts:
	libavformat/mxfdec.c
	libavformat/utils.c
	tests/lavf-regression.sh

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

tests/lavf-regression.sh

@@ -187,6 +187,10 @@ if [ -n "$do_dpx" ] ; then
 do_image_formats dpx
 fi
 
+if [ -n "$do_xwd" ] ; then
+do_image_formats xwd
+fi
+
 # audio only
 
 if [ -n "$do_wav" ] ; then