configure: whitespace cosmetics
lavc: Add option to encode MPEG-2 AAC with libfdk-aac

Signed-off-by: Anton Khirnov <anton@khirnov.net>
matroskaenc: restore compatibility with non referenced AVPacket

Signed-off-by: Anton Khirnov <anton@khirnov.net>
lavf: don't abort if both encoder and muxer aspect ratios are not set

Signed-off-by: Anton Khirnov <anton@khirnov.net>
Merge commit 'ace87c19ed4c4882d7b9b3ce512c4c195e39a203'

* commit 'ace87c19ed4c4882d7b9b3ce512c4c195e39a203':
  configure: whitespace cosmetics

Conflicts:
	configure

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '95d52464542f532061290192518d5fe1c1930e8d'

* commit '95d52464542f532061290192518d5fe1c1930e8d':
  lavc: Add option to encode MPEG-2 AAC with libfdk-aac

Conflicts:
	doc/APIchanges
	libavcodec/version.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit 'c3e58f8fb75d8467161a65b85eb88281547ebab1'

* commit 'c3e58f8fb75d8467161a65b85eb88281547ebab1':
  matroskaenc: restore compatibility with non referenced AVPacket

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge remote-tracking branch 'qatar/master'

* qatar/master:
  lavf: don't abort if both encoder and muxer aspect ratios are not set

Conflicts:
	libavformat/mux.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
avformat/avio: Fix EOF handiling of ffurl_read_complete()

Fixes Ticket2537

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