Rename standby methods

ThreadBase::standby() returns the value of mStandby.

RecordThread::standby() "overrode" ThreadBase::standby(), but with a
different meaning and no return value.  This meant you couldn't
access the parent's class definition within RecordThread.

This could be confusing, so this CL renames RecordThread::standby()
to standbyIfNotAlreadyInStandby().

Change-Id: I9196ee12701dd2dccdfaed922af2d7b8e8774676
diff --git a/services/audioflinger/Threads.h b/services/audioflinger/Threads.h
index 8a859f5..cbc3827 100644
--- a/services/audioflinger/Threads.h
+++ b/services/audioflinger/Threads.h
@@ -931,7 +931,7 @@
             void    clearSyncStartEvent();
 
             // Enter standby if not already in standby, and set mStandby flag
-            void    standby();
+            void    standbyIfNotAlreadyInStandby();
 
             // Call the HAL standby method unconditionally, and don't change mStandby flag
             void    inputStandBy();