Abuse plugins which embed metrics in the default location.

By: md_5 <md_5@live.com.au>

Bukkit-Patches/0004-Add-nag-for-bad-plugins.patch

@@ -0,0 +1,30 @@
+From 88434c8203dffc0461bf7a73a45af6c6e1052d5d Mon Sep 17 00:00:00 2001
+From: md_5 <md_5@live.com.au>
+Date: Sat, 2 Feb 2013 16:40:42 +1100
+Subject: [PATCH] Add nag for bad plugins.
+
+---
+ src/main/java/org/bukkit/plugin/java/PluginClassLoader.java | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+diff --git a/src/main/java/org/bukkit/plugin/java/PluginClassLoader.java b/src/main/java/org/bukkit/plugin/java/PluginClassLoader.java
+index 29ec3fc..da3ab0b 100644
+--- a/src/main/java/org/bukkit/plugin/java/PluginClassLoader.java
++++ b/src/main/java/org/bukkit/plugin/java/PluginClassLoader.java
+@@ -69,6 +69,13 @@ public class PluginClassLoader extends URLClassLoader {
+         if (name.startsWith("org.bukkit.") || name.startsWith("net.minecraft.")) {
+             throw new ClassNotFoundException(name);
+         }
++
++        // Spigot start
++        if (name.equals("org.mcstats.Metrics")) {
++            loader.server.getLogger().warning("Plugin from file: " + getURLs()[0] + " has embedded Metrics in the default package. This is not advisable, go nag them!");
++        }
++        // Spigot end
++
+         Class<?> result = classes.get(name);
+ 
+         if (result == null) {
+-- 
+1.8.1-rc2
+