Merge remote-tracking branch 'qatar/master'

Merge remote-tracking branch 'qatar/master'

* qatar/master:
  avconv: Fix spelling errors.
  aac: Only set sample rate and object type from ADTS if output hasn't been configured.
  aac: Set SBR and PS to unsignalled during headerless and ADTS initialization.
  aac: Only output configure if audio was found.
  avconv: save two levels of indentation in flush_encoders()
  avconv: factor flushing encoders out of output_packet().
  avconv: factor out initializing input streams.
  avconv: remove -intra option.
  avconv: reset streamid_map between output files.
  avconv: make timer_start a local var in transcode().
  avconv: cosmetics, move OutputStream.
  avconv: remove two unused macros.

Conflicts:
	avconv.c

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