Turn down spammy JavaObject finalize messages to "spam".

Patch by: jat
Review by: me

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@7207 8db76d5a-ed1c-0410-87a9-c151d255dfc7
diff --git a/xpcom/JavaObject.cpp b/xpcom/JavaObject.cpp
index ca0104b..2780090 100644
--- a/xpcom/JavaObject.cpp
+++ b/xpcom/JavaObject.cpp
@@ -265,7 +265,7 @@
 }
 
 void JavaObject::finalize(JSContext* ctx, JSObject* obj) {
-  Debug::log(Debug::Debugging) << "JavaObject::finalize obj=" << obj
+  Debug::log(Debug::Spam) << "JavaObject::finalize obj=" << obj
       << " objId=" << JavaObject::getObjectId(ctx, obj) << Debug::flush;
   SessionData* data = JavaObject::getSessionData(ctx, obj);
   if (data) {