Revert "Merge pull request #4642 from wsnipex/linking-fix"

This reverts commit 0d1d80373801c330e2a5dc938cc50d0d6d3ccc6d, reversing
changes made to 60bd97bdd8d662807076e9838ad7632b8c92d4fa.
[gui] fix <hinttext> not being shown once unfocused/refocused
Merge pull request #4650 from FernetMenta/paplayer

paplayer: fix accidently disabled seek by fc2b1b2
[release] bump atv2/ios for re-release
Merge pull request #4651 from MartijnKaijser/ios-atv2_bump

Ios atv2 bump
[configure] use pkg-config for rtmp detection. fixes linking with newer librtmp versions
[configure] fix static linking when ffmpeg found nettle/hogweed
Merge pull request #4654 from wsnipex/linking-fix

Fix building on linux with newer librtmp nr2
[depends] move ffmpeg to unified deps
[configure] remove internal ffmpeg
remove ffmpeg from tree
ffmpeg: remove dll wrappers
add ffmpeg lock manager
todo: refactor to own file
ffmpeg: move callbacks into separate file
remove ffmpeg dlls from generated headers
not removing win32 as this might still be needed?
[rpi] setup-sdk.sh: allow overriding of buildroot and xbmc install paths
also don't require root if not needed
add ffmpeg makefile for rpi
[WIN32] download and compile ffmpeg from remote source.
[WIN32] make XBMC compile, build and run with the ffmpeg link libraries.
[WIN32] use ffmpeg version from tools\depends\target\ffmpeg\FFMPEG-VERSION