In these RS API calls, it is possible (and very likely) that some Java objects
are written to via JNI calls into the RS driver. These writes can end up being
discarded if we specify JNI_ABORT, particularly if the Java object has been
moved due to GC. The change introduces a readonly mode for some macro calls
and updates other JNI callers to appropriately skip JNI_ABORT.
Change-Id: I8c5f2ae959b3fbc9008c9d2ac4542f2ebab29b06
414fa2c93a