Export app implementation and header jars

Also fix a missing dependency on the jacoco-report-classes.jar

Test: m checkbuild
Change-Id: I67e924051e1029a409b82f2220811a27d5401db9
diff --git a/core/clear_vars.mk b/core/clear_vars.mk
index fc2adde..09f9be5 100644
--- a/core/clear_vars.mk
+++ b/core/clear_vars.mk
@@ -227,8 +227,9 @@
 LOCAL_SDK_VERSION:=
 LOCAL_SHARED_ANDROID_LIBRARIES:=
 LOCAL_SHARED_LIBRARIES:=
-LOCAL_SOONG_HEADER_JAR :=
+LOCAL_SOONG_CLASSES_JAR :=
 LOCAL_SOONG_DEX_JAR :=
+LOCAL_SOONG_HEADER_JAR :=
 LOCAL_SOONG_JACOCO_REPORT_CLASSES_JAR :=
 LOCAL_SOONG_RESOURCE_EXPORT_PACKAGE :=
 LOCAL_SOONG_RRO_DIRS :=