Add soong_javac_filter to all javac commands

soong_javac_filter colorizes javac output, and hides noisy messages.

Test: builds
Change-Id: I7e8fcd2e4e1ed3ff530a8ccfe931ceb7e411e0ad
diff --git a/core/java.mk b/core/java.mk
index d5fcf61..1ebe3b5 100644
--- a/core/java.mk
+++ b/core/java.mk
@@ -440,6 +440,7 @@
         $(RenderScript_file_stamp) \
         $(proto_java_sources_file_stamp) \
         $(NORMALIZE_PATH) \
+        $(JAVAC_FILTER) \
         $(LOCAL_ADDITIONAL_DEPENDENCIES)
 	$(transform-java-to-classes.jar)