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.
Revert "projects/RPi/patches/linux: update RPi support patch"

This reverts commit 3181817556632de910dae606d6c733325da05bbe.
systemd: update to systemd-213

Signed-off-by: Stephan Raue <stephan@openelec.tv>
Merge remote-tracking branch 'upstream/master'
projects/RPi/patches/linux: update RPi support patch

Signed-off-by: Stephan Raue <stephan@openelec.tv>
gnutls: update to gnutls-3.2.15

Signed-off-by: Stephan Raue <stephan@openelec.tv>
inputproto: update to inputproto-2.3.1

Signed-off-by: Stephan Raue <stephan@openelec.tv>
scripts/image: fix etc/os-release
nettle: add patch to support out-of-tree builds

Signed-off-by: Stephan Raue <stephan@openelec.tv>
nettle: set CC_FOR_BUILD

Signed-off-by: Stephan Raue <stephan@openelec.tv>
nettle: add patch to fix pkgconfig file, so gnutls is finding all nettle headers

Signed-off-by: Stephan Raue <stephan@openelec.tv>
nettle: add mini-gmp support

Signed-off-by: Stephan Raue <stephan@openelec.tv>
gnutls: enable nettle-mini support

Signed-off-by: Stephan Raue <stephan@openelec.tv>
gmp: remove target build support

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

Signed-off-by: Stephan Raue <stephan@openelec.tv>
bcm2835-driver: update to bcm2835-driver-e2b77f9

Signed-off-by: Stephan Raue <stephan@openelec.tv>
bcm2835-bootloader: update to bcm2835-bootloader-e2b77f9

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

Signed-off-by: Stephan Raue <stephan@openelec.tv>
bcm2835-bootloader: update to bcm2835-bootloader-02eed2f

Signed-off-by: Stephan Raue <stephan@openelec.tv>
bcm2835-driver: update to bcm2835-driver-02eed2f

Signed-off-by: Stephan Raue <stephan@openelec.tv>