Start pulling bits of FastMixer up to FastThread

Change-Id: I4c6f7b8f88fcf107bb29ee6432feecd4ab6554d2
diff --git a/services/audioflinger/Configuration.h b/services/audioflinger/Configuration.h
index 0754d9d..6a8aeb1 100644
--- a/services/audioflinger/Configuration.h
+++ b/services/audioflinger/Configuration.h
@@ -31,6 +31,7 @@
 
 // uncomment to enable fast mixer to take performance samples for later statistical analysis
 #define FAST_MIXER_STATISTICS
+// FIXME rename to FAST_THREAD_STATISTICS
 
 // uncomment for debugging timing problems related to StateQueue::push()
 //#define STATE_QUEUE_DUMP