[FFmpeg] version bump to n1.2 (rev e820e3a) - lib/ffmpeg

This commit now contains the original patches sub directory:
  patches 			- Org dir that contains applied xbmc custom patches.
  patches/README-patches	- New README file with info about xbmc patches.
  patches/obsolete-patches	- New dir with obsolete xbmc patches.
[FFmpeg] version bump to n1.2 (rev e820e3a) - xbmc files

lib/DllAvFormat.h
lib/Makefile.in
lib/ffmpeg/build_xbmc_win32.sh
project/Win32BuildSetup/BuildSetup.bat
project/Win32BuildSetup/buildmingwlibs.sh
tools/depends/native/gas-preprocessor-native/gas-preprocessor.pl
xbmc/DllPaths_win32.h
xbmc/cores/dvdplayer/DVDAudio.h
xbmc/cores/dvdplayer/DVDCodecs/DVDCodecs.h
xbmc/cores/dvdplayer/DVDCodecs/Video/DVDVideoCodecFFmpeg.cpp
xbmc/cores/dvdplayer/DVDCodecs/Video/DVDVideoCodecFFmpeg.h
xbmc/cores/dvdplayer/DVDCodecs/Video/DVDVideoCodecLibMpeg2.cpp
xbmc/cores/dvdplayer/DVDCodecs/Video/DXVA.cpp
xbmc/cores/dvdplayer/DVDDemuxers/DVDDemux.h
xbmc/cores/dvdplayer/DVDPlayerAudio.h
xbmc/cores/dvdplayer/DVDStreamInfo.h
[WIN32] fixed BuildSetup.bat: copy the pdb file to the build setup directory.

Since Jenkins is dependent of the "pdb" file, it is copied to the setup directory with the new name "XBMCSetup-%GIT_REV%-%target%.pdb"
Removed "dead" (commented out) line (// pic->age  = 256*256*256*64; // decrepated)
fixed, restore search_paths_first in platform_ldflags only to avoid gcc warning spew of 'linker input file unused because linking not done'
fixed compiler warning about unused var
Fix crash on delete of active profile
Merge pull request #2589 from leechguy/CONTROL_AUTOLOGIN

Fix crash on delete of active profile + other fixes for PR 2577
[fix] actually care about 12/24h clock in last introduced timeformats
Merge pull request #2595 from herrnst/pr-fixtimeformats12h

[fix] actually care about 12/24h clock in last introduced timeformats
move the new 'auto login' string to the xbmc language file
Merge pull request #2596 from ronie/autologin

move the new 'auto login' string to the xbmc language file
Merge pull request #2554 from FlyingRat/ffmpeg-n1.2

[FFmpeg] version bump to n1.2 (rev e820e3a)
Only override episode/season numbers if the file name has them
Merge pull request #2590 from ScudLee/Date-based_Nfo_fix

Only override episode/season numbers if the file name has them
encoder: signed vs unsigned warning
dvdplayer: sub_id in ffmpeg has been depreciated and doesn't work
gas-preprocessor/-arch switch, missed one in ceab8eb9b70f7af17850350cb3af9ce328ae5609
VideoRenerers: add buffering
add buffering for GLES