Converted libaudioutils implementation to C.

Converted libaudioutils implementation and interfaces from C++ to C
and removed dependencies from frameworks/base classes so that it can
be used by any audio HAL implementation.

Change-Id: I3f7ce541be8495d41864661451540971b067359b
diff --git a/CleanSpec.mk b/CleanSpec.mk
index 599de4a..2422a69 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -50,6 +50,7 @@
 $(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/JAVA_LIBRARIES/filterpack_text_intermediates)
 $(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/JAVA_LIBRARIES/filterpack_ui_intermediates)
 $(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/JAVA_LIBRARIES/filterpack_videosrc_intermediates)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/SHARED_LIBRARIES/libaudioutils_intermediates)
 
 # ************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST