Make ImageView drawable update more efficient in some cases.

When updating the view's drawable via setImageResource or setImageURI,
make sure to skip the layout pass if the old and new drawable have equal
sizes. This follows what is already done for setDrawable().

Change-Id: If73d225e38d0a2f7c616c4aeb33f67bdaed390f1
Avoid layout passes when updating data activity indicators.

ImageView can optimize out layout passes if old and new drawable have
equal sizes. Take advantage of that by displaying a transparent drawable
with the same size as the in/out drawables when there's no activity
instead of clearing out the drawable in that case.

Change-Id: Iaaa556ffab3ed4be1da8016ed40d0a9c2efcde01
keyguard: fix layout for sw320dp devices

800x480px dpi devices have less screen space than the xhdpi devices
Google designed the layout for and the layout needs adjustment.

- Reduce the lockscreen security container size such that the clock
  widget has enough space to display its content.
- In the SIM PIN/PUK view, Google put an empty widget on top, but
  we don't have space for that, increase its size such that the
  widget practically disappears.

This should not have any effect on devices with larger screens.

Ported from cm-10.2.
* Removed invalid mdpi layout leftover from framework-res
* Fix keyguard for mdpi devices too

Change-Id: I9e811cfd312abae24a9cad189d19e73848f6c4c1
Merge "Make ImageView drawable update more efficient in some cases." into cm-11.0
Merge "Avoid layout passes when updating data activity indicators." into cm-11.0
Merge "keyguard: fix layout for sw320dp devices" into cm-11.0
Add support for allow-permission extension.
This will grant a sharedUserId arbitrary permissions as defined by XML files
in /system/etc/permissions.

Change-Id: I4c0be56173b89621c4cc7ae589715a030931e8d5
wifi: Allow Settings to retrieve country code (1/2)

This makes getCountryCode behave like getFrequencyBand

This allows Settings to get/set country code like
it can for frequency band.

Ported from cm-10.2, adjusted for 4.4
Settings part: http://review.cyanogenmod.org/54904

Change-Id: Id9f00d3a678642c6c142fd1511af820d729507a7
SystemUI: Fix battery indicator alignment

Before: http://i.imgur.com/WEz7pPa.png
After: http://i.imgur.com/BkvQ3Df.png

Change-Id: I7ed9f79863eeebd3dd2ba44ae95d413d4d5ebe9e
Add lockscreen rotation as an optional rotation setting (1/2)

This will allow the user to select wether or not to use the
rotation settings for the lockscreen.  This is dependent
upon the rotation setting being checked.

Forward port from cm-10.2, adjusted for 4.4

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

Change-Id: Ibd7c69b0af1e0a7d91b985f2b21ea0b5bc619a70
JIRA: CYAN-339
Merge branch 'Cyanogen/cm-11.0'