Memory leak in IInputMethodSessionWrapper executeMessage

In some cases the executeMessage is called with
mInputMethodSession == null. For the messages

DO_UPDATE_SELECTION, DO_APP_PRIVATE_COMMAND

memory is leaked. This commit recycles the args freeing
the allocated memory.

Change-Id: Ic5455a993442780d43a3b0b02e84a7ab931010b1
libaudioeffect_jni GREF leak fix

- excessive jni reference in AudioEffects
- global references created during native setup are not deleted
- global references are dleted in setup failure and during native releases

Changeset 2:
    -fixed whitespace, and rebased on jb42

Change-Id: I3ff54cc3b0c5394e978421dad3a7a257551f776e