Disable jack for vogar.

This is really a host java library which pretends to be a target
java library to pull in the Android SDK. We don't want to use jack
because jack doesn't produce jar files for STATIC_JAVA_LIBRARIES,
and produces its own intermediate representation instead.

Change-Id: I0c1f55f271c2c43560f629e7d8e8138b2c39ab3f
diff --git a/Android.mk b/Android.mk
index 4eacaf2..d4d8604 100644
--- a/Android.mk
+++ b/Android.mk
@@ -42,6 +42,12 @@
 # Vogar uses android.jar.
 LOCAL_SDK_VERSION := 9
 
+# This is really a host java library which pretends to be a target
+# java library to pull in the Android SDK. We don't want to use jack
+# because jack doesn't produce jar files for STATIC_JAVA_LIBRARIES,
+# and produces its own intermediate representation instead.
+LOCAL_JACK_ENABLED := disabled
+
 include $(BUILD_STATIC_JAVA_LIBRARY)
 
 # Build dependencies.