iff: K&R formatting cosmetics
iff: Do not read over the source buffer

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
wmavoice: return meaningful error codes
wmavoice: use init_static_data
wmavoice: conceal clearly corrupted blocks

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
doc/developer: update sections about external development

Replace the sections "API" and "Integrating libavcodec or libavformat"
with updated / more accurate text.

See thread:
Subject: [FFmpeg-devel] [PATCH] doc/developer: merge and update sections about external development
Date: Fri,  5 Jul 2013 11:07:07 +0200
doc/formats: add section describing stream specifiers
lavf/segment: add initial_offset option

Should address trac ticket #2224.
lavf/segment: reindent after last commit
lavf/segment: use AV_OPT_TIME_DURATION for time_delta

Simplify.
mjpegdec: initialize source variables before gbr remap

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
mjpegdec: Fix used quant index for gbr

Fixes Ticket1651

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '3865ba7b21aef5d60183719e238361ec8797ab5a'

* commit '3865ba7b21aef5d60183719e238361ec8797ab5a':
  iff: K&R formatting cosmetics

Conflicts:
	libavcodec/iff.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '7d65e960c72f36b73ae7fe84f8e427d758e61da9'

* commit '7d65e960c72f36b73ae7fe84f8e427d758e61da9':
  iff: Do not read over the source buffer

Conflicts:
	libavcodec/iff.c

See: 2fbb37b51bbea891392ad357baf8f3dff00bac05

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '04e9853a210e07b1a150aa2b8e9af0aa3601ff21'

* commit '04e9853a210e07b1a150aa2b8e9af0aa3601ff21':
  wmavoice: return meaningful error codes

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit 'f5c48f5adaead5259660d4eaab2e695d1bac3a08'

* commit 'f5c48f5adaead5259660d4eaab2e695d1bac3a08':
  wmavoice: use init_static_data

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

* qatar/master:
  wmavoice: conceal clearly corrupted blocks

Merged-by: Michael Niedermayer <michaelni@gmx.at>
mjpegdec: parse app-colr

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
mjpegdec: parse app-xfrm

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/jpeglsdec: support xfrm 1-3

Fixes 75% of Ticket893

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