Merge pull request #4549 from koying/fixamcinitcolor

FIX: [mediacodec] fixup initial output format for software rendering
Merge pull request #4550 from koying/fixstfinbufsize

FIX: [stagefright] adjust input mediabuffer size
Merge pull request #4527 from Jalle19/fix-timeline-navigation

[epg] Fix navigating to the sidebar with cursor keys
Merge pull request #4568 from MartijnKaijser/fix_pydoc2

[pydocs] update xbmc.PlaySFX example after 770091c
Merge pull request #4564 from koying/fixmediakeys

FIX: [keyboard;droid] add mappable media keys for rewind and fastforward
Merge pull request #4547 from jesshaas/curl-socket-error

Add EINTR check to select in CCurlFile::FillBuffer. Fixes bug#15019
Merge pull request #4557 from arnova/nginx_filesize

Nginx filesize was broken for some configs
Merge pull request #4567 from koying/fixamcbuffers

FIX: [mediacodec] make sure the output buffer is released from the SurfaceView queue
Merge pull request #4569 from koying/fixamcreleasebuffer

FIX: [mediacodec] properly release output buffer if AddProcessor is not called
videoplayer: adapt lateness detection and dropping to buffering
video player: present correct pts to user for a/v sync (after buffering in renderer)
videoplayer: some rework and documentation
renderer: bump buffers to 5
videoplayer: update frametime, it might change due to fps detection
videoplayer: give streams with invalid fps a chance for fps detection
dvdplayer: allow rewinding at end of stream, do a seek after rewind
X11: ditch SDL for video and window events
X11: Add xbmc icon
X11: add SDL joystick until we have a better solution
X11: factor out code handling device reset notification