connman: allow user editable main.conf

In recent months I have seen a number of cases where users need to
change ‘prefer ethernet’ to ‘prefer wifi’ or where users are trying to
enable tethering for ethernet or are running other daemons that add
network interfaces that should not be auto-managed by comman. All of
these require user editing of main.conf so this change moves main.conf
to /storage where it can be tweaked under-the-hood if needed.
tvheadend: update to tvheadend-3.9.1050
ffmpeg: change to official release

Signed-off-by: Stephan Raue <stephan@openelec.tv>
xbmc-master_ update to xbmc-master-14-687ac52, update FM patch, add patch to fix commit https://github.com/xbmc/xbmc/commit/6322457ea46e83491fa0675cb6ac9bf2e3578882

Signed-off-by: Stephan Raue <stephan@openelec.tv>
bcm2835-driver: update to bcm2835-driver-1e7d3d9

Signed-off-by: Stephan Raue <stephan@openelec.tv>
bcm2835-bootloader: update to bcm2835-bootloader-1e7d3d9

Signed-off-by: Stephan Raue <stephan@openelec.tv>
projects/RPi/patches/xbmc-master: update RPi support patch

Signed-off-by: Stephan Raue <stephan@openelec.tv>
linux: update to linux-3.15.4

Signed-off-by: Stephan Raue <stephan@openelec.tv>
xbmc-master: update to xbmc-master-14-dae6f76

Signed-off-by: Stephan Raue <stephan@openelec.tv>
Merge pull request #3189 from chewitt/custom_connman

connman: allow user editable main.conf
Merge branch 'master' of https://github.com/OpenELEC/OpenELEC.tv

# By Stephan Raue (7) and others
# Via Stephan Raue
* 'master' of https://github.com/OpenELEC/OpenELEC.tv:
  xbmc-master: update to xbmc-master-14-dae6f76
  linux: update to linux-3.15.4
  projects/RPi/patches/xbmc-master: update RPi support patch
  bcm2835-bootloader: update to bcm2835-bootloader-1e7d3d9
  bcm2835-driver: update to bcm2835-driver-1e7d3d9
  xbmc-master_ update to xbmc-master-14-687ac52, update FM patch, add patch to fix commit https://github.com/xbmc/xbmc/commit/6322457ea46e83491fa0675cb6ac9bf2e3578882
  ffmpeg: change to official release
  tvheadend: update to tvheadend-3.9.1050
  connman: allow user editable main.conf
Cubox: xbmc-002-imx6 isn't required - remove
linux: enable snd debug
Cubox: xbmc-master: change SplitString to Split