Merge remote branch 'qatar/master'

* qatar/master: (32 commits)
  libopencore-amr, libvo-amrwbenc: Allow enabling DTX via private AVOptions
  libopencore-amr, libvo-amrwbenc: Only check the bitrate when changed
  libopencore-amr, libvo-amrwbenc: Find the closest matching bitrate
  libvo-*: Fix up the long codec names
  libavcodec: Mark AVCodec->priv_class const
  swscale: Factorize FAST_BGR2YV12 definition.
  libvo-aacenc: Only produce extradata if the global header flag is set
  lavf: postpone removal of public metadata conversion API
  lavc: postpone removal of request_channels
  lavc: postpone removal of audioconvert and sample_fmt wrappers
  lavf: postpone removal of deprecated avio functions
  libopencore-amr: Cosmetics: Rewrap and align
  libopencore-amr, libvo-amrbwenc: Rename variables and functions
  libopencore-amr: Convert commented out debug logging into av_dlog
  libopencore-amr: Remove an unused state variable
  libvo-amrwbenc: Don't explicitly store bitrate modes in the bitrate table
  libopencore-amr: Remove a useless local variable
  libopencore-amr, libvo-amrwbenc: Make the bitrate/mode mapping array static const
  libopencore-amr, libvo-amrwbenc: Return proper error codes in most places
  libopencore-amr: Don't print carriage returns in log messages
  ...

Conflicts:
	doc/developer.texi
	libavcodec/avcodec.h
	libavcodec/libvo-aacenc.c
	libavcodec/libvo-amrwbenc.c

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

libavformat/url.h

@@ -59,6 +59,7 @@ typedef struct URLProtocol {
     int priv_data_size;
     const AVClass *priv_data_class;
     int flags;
+    int (*url_check)(URLContext *h, int mask);
 } URLProtocol;
 #endif