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
Screenshot Delete: Fix string key naming

Change-Id: I9440d21a1d638f87e0deb26af140d632eec1e7b8
Signed-off-by: Evan Anderson <evan1124@gmail.com>
Lockscreen: See through (1/2)

Add the ability to see through lockscreen.
Adapted to kitkat from jellybean by @BigBrother1984

Signed-off-by: D4rKn3sSyS <jesdga95@gmail.com>
Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>

PS2:

* Adding missing sem-colon.

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

Change-Id: I9057a6e302a5a824799844f27e8f64ff677a520a

PS3:

* Replace and remove undefined mContext.
* Define the boolean enableScreenRotation inside new method.
* Whitespaces clean up.

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

PS4:

* Restore mContext in setKeyguardParams().

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

PS5:

* Fixes for setKeyguardParams() and maybeCreateKeyguardLocked() methods, kitkat changed some things.

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

PS6:

* Missing sem-colon.

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

PS7: Fix all the things.

* Effects doesn't vanish after first unlock.
* Created condition in updateShowWallpaper() method that just return if see through is activated, he was restoring the wallpaper at second lock.

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

PS8: Cosmetic changes.

* Correct java style name to seeThrough() and place it above updateShowWallpaper().

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

PS9: Other cosmetic changes.

* Better name to the see through boolean.
* Removed a space nitpick.

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

PS10:

* We had two booleans for the same thing, ditch the one defined in one class only and take the global.

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

Change-Id: I06d952f85baf284961a24c8c9f90b29f4aef719a
Merge "Lockscreen: See through (1/2)" into kitkat
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