[RenderScript] Add additional check for determining whether to use
native RS.

 Workaround for Incremental Support lib on KK.
 - if targetSdkVersion > device API version, always use compat mode
   to gain access to all the intrinsics.
 - For developers intended to use intrinsics introduced later than KK
   Need to set the targetSdkVersion > KK, which is running in compat
   mode.
 - Otherwise on KK, be able to run scripts and intrinsics<=19, in native
   mode.

Change-Id: Ie00ab8b05d274b46cafd71d1347ef7ac4e91aca7
3 files changed