CHG: [droid] Do not pause music when going to background
[pvr] apply the view state handling on a per window basis

As reported in our forum at http://forum.xbmc.org/showthread.php?tid=175135&pid=1776697#pid1776697 the view state handling depends on the current selected group. This changes the handling to be on a per window basic instead.
ADD: Freescale i.MX6 h/w codec
ADD: [imx] native framebuffer support
increase ABI for the GUI to 5.3.0 and break backwards compatibility with Gotham
[win32][Fix] Set hDeviceNotify to 0 after a successful UnregisterDeviceNotification call.
smartplaylist: handle FieldAlbumArtist the same as FieldArtist for musicvideos
smartplaylist: only allow fields for mixed playlists that are available for both musicvideos and songs
smartplaylist: improve/fix editing mixed smartplaylists
Merge pull request #5255 from xhaggi/pvr-apply-view-state-on-a-per-window-basis
[keymap] don't overload <space> key (pause action) with playlist functionality and rather use <n> for this like already on other places
[keymap] make <play_pause> button actually trigger PlayPause action
Merge pull request #5244 from da-anda/keymap-overload

[UX] keymap fixes - don't overload pause action with something else
dvdplayer: fix setting playspeed on startup
Remove unused local variables
Revert "X11: avoid probing hw on query xrandr"

This reverts commit 5814e7f5696512c37c5f298467f71d10dfe3162d.
X11: recreate window after wakeup from dpms
Merge pull request #5288 from maksqwe/remove_unused

Cleanup unused local variables
Merge pull request #5202 from xbmc-imx6/pr-imx

ADD support for freescale i.MX6
Merge pull request #5189 from koying/chgdroidmusicpause

CHG: [droid] Do not pause music when going to background