change printf text "composer" to "message compose"

mailnews/compose/build/nsMsgCompFactory.cpp

@@ -296,7 +296,7 @@ extern "C" NS_EXPORT nsresult NSRegisterSelf(nsISupports* aServMgr, const char*
    
 
 #ifdef NS_DEBUG
-  printf("composer registering from %s\n",path);
+  printf("Message Compose registering from %s\n",path);
 #endif
 
   return finalResult;