Manual merge of change 50994 from master (DO NOT MERGE)

Merging from master because I'm bringing my maps API work into
gingerbread.

Fix and enable JarJar in Java builds.

java.mk contained a target to enable JarJar in Java builds, but it was
being bypassed.  This change enabled JarJar as part of the build
process, and fixes a slight bug with the way it was set up.

Change-Id: I814e64eb30b41bf249a63d683c03040e2658fe0d
diff --git a/core/config.mk b/core/config.mk
index 0877ebd..8d2f96c 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -210,7 +210,7 @@
 MKTARBALL := build/tools/mktarball.sh
 TUNE2FS := tune2fs
 E2FSCK := e2fsck
-JARJAR := java -jar $(HOST_OUT_JAVA_LIBRARIES)/jarjar.jar
+JARJAR := $(HOST_OUT_JAVA_LIBRARIES)/jarjar.jar
 PROGUARD := external/proguard/bin/proguard.sh
 JAVATAGS := build/tools/java-event-log-tags.py