* qatar/master:
  avio: add more documentation for AVIOContext.
  Parse sprite data for WMVP and WVP2, and decode sprites for the latter
  Replace outdated info on the FAQ
  Redefine sameq
  pad: fix example explanation
  gradfun: add notice from the MPlayer manual
  eval: add support for trunc, ceil, and floor functions
  documentation: add setdar and setsar description to filters.texi
  avio: document some members of AVIOContext.
  avio: document avio_close().
  avio: cosmetics, vertically align comments.
  avio: cosmetics, group the reading functions.
  avio: cosmetics, merge all the FF_API_OLD_AVIO blocks.
  avio: cosmetics, move AVIOContext to start of the file.
  avio: update file header.
  os: fix OpenBSD/PowerPC compilation
  pixfmt: add PIX_FMT_BGR48LE and PIX_FMT_BGR48BE
  oggdec: fix demuxing chained audio streams
  fix typo

Conflicts:
	doc/filters.texi
	libavformat/avio.h
	libavutil/pixfmt.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>