Set some GC parameters only for dalvik

Commit https://github.com/CyanogenMod/android_frameworks_base/commit/8f566390bceee9f01b1721c4d00b1b246d26be16
fixed parsing of certain GC values. Before the result was "" and so the
if statement was always false, never executing the setTargetHeap* calls.

Now they are executed but ART currently doesn't support setting
heapminfree and heapconcurrentstart resulting in a UnsatisfiedLinkError
Exception.

Check for the used runtime first and only execute the methods for Dalvik. 

Change-Id: I09e60802685acbec04598646e9f7700f33b53b4c
Signed-off-by: Dirk Rettschlag <dirk.rettschlag@gmail.com>
Frameworks: Lockscreen custom wallpaper (1/2)

kitkat now has code for a custom wallpaper image.

Using that code set a switch case to set the custom background between
  - Custom Wallpaper
  - Default background

This way allows the same overlay shadow thats set on the keyguard when
its the defualt way.

Change-Id: I98fde63ef9f3c0a5f334cd9a97b237a6f99c57f6
Merge "Set some GC parameters only for dalvik" into cm-11.0
Revert "[1/2] Base: Lockscreen wallpaper"

This reverts commit 4df24be477a40079704ea611f166d35a1e592fab.
Merge cm 'branch cm-11.0' into dcm-wip