frameworks/base: IPV6 tethering support

This patch adds two new API calls addUpstreamV6Interface and
removeUpstreamV6Interface to the tethering framework to pass the IPv6
upstream and downstream interfaces to netd if IPv6 is available.
Required to enable ICMPv6 forwarding.

[*]IPV6 tethering: Check info for null before removeUpstreamV6Interface

When tethering on dual stack networks such as verizon wireless and
sending or recieving MMS you get an null pointer exception and hard
reboot.

It starts to go wrong here:
10-14 19:11:51.375: E/Mms/smil(28035): Failed to parse SMIL document.
10-14 19:11:51.375: E/Mms/smil(28035): org.xml.sax.SAXParseException:
expected start tag notEND_DOCUMENT null@1:1 in java.io.InputStreamReader
@4192ada0

And then:
10-14 19:11:55.559: E/AndroidRuntime(23125): java.lang.NullPointerException
10-14 19:11:55.559: E/AndroidRuntime(23125):    at com.android.server.
connectivity.Tethering$TetherMasterSM$TetherModeAliveState.processMessage
(Tethering.java:1573)

Which is line 1573 of:

https://github.com/CyanogenMod/android_frameworks_base/blob/cm-10.2/services/java/com/android/server/connectivity/Tethering.java#L1573

CMD_UPSTREAM_CHANGED's message.obj can be null (line 776).

Change-Id: I1f4f6284b2f152d8b4f0fbd02ac5a17f57c71dd7
Change "No recent apps" color to white instead of holo blue to follow new UI colors.

Thanks @rascarlo

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>
change-Id: Ied4730e321021445baf1191e167d645f39f4c92f
Core: Disable fullscreen keyboard.

* Hardcode the keyboard in landscape mode avoiding going full screen.

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>

PS5:

* Add missing sem-colon, always forget it :)

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>

Change-Id: I290d17571204c753382873ca15b98a3ab5917765
Merge "Core: Disable fullscreen keyboard." into kitkat
Merge "Change "No recent apps" color to white instead of holo blue to follow new UI colors." into kitkat
Volume Rocker: Switch from Broadcast to Audioservice.

* Fix volume rocker music track seek.
* Minor fixes

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>

Change-Id: If4afda046b9fbebda611615371a718122ffb57b6
Merge "frameworks/base: IPV6 tethering support" into kitkat
Volume Rocker: Do not wake up during track seek.

* After switching to Audioservice track seek works great but it woke the device too if we select both options. Wake only if we do not skip tracks (like raising the volume).

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>
Merge remote-tracking branch 'origin/kitkat' into kitkat

Conflicts:
	services/java/com/android/server/connectivity/Tethering.java