Adding operations to reflected Renderscript class

Renderscript expose its native types back to the Android
system through a set of classes defined within the renderscript
package. These classes provides no easy mean to manipulate
data they represent. It would be convinient to be able to manipulate
the data stored within an allocation via these classes directly
instead of having to marshall them into native Java objects.

This commit adds such operations to the existing exposed vector types.

Change-Id: I1845df1368a82f0d39b36416c83938c7160f6a3f
Keep PhoneStatusBar default constructor around.

By keeping the entire class safe.

Cherry picked because the device will otherwise be unusable
if compiled with proguard 4.10.

(cherry picked from commit af568530203dc2ee59f5fda4895d28b29dd92226)

Change-Id: I0b880f382101f737511bc6db96c604f43ed8d266
Merge "Keep PhoneStatusBar default constructor around."
Merge "Adding operations to reflected Renderscript class"