Fix nothing-to-do build.

Because .odex is always newer than the .jar file, so we should use "|" depdendency here.

Change-Id: Ied4c5ec4ee3294862c0a232f96c15cca2c748e11
diff --git a/core/base_rules.mk b/core/base_rules.mk
index f372748..206c087 100644
--- a/core/base_rules.mk
+++ b/core/base_rules.mk
@@ -499,7 +499,7 @@
 	@echo "Install: $@"
 	$(copy-file-to-target)
 
-$(LOCAL_INSTALLED_MODULE): $(installed_odex)
+$(LOCAL_INSTALLED_MODULE) : | $(installed_odex)
 endif
 
 endif # !LOCAL_UNINSTALLABLE_MODULE