Added basic hardcore mode functionality, needs testing.

src/main/java/com/gmail/nossr50/listeners/HardcoreListener.java

@@ -0,0 +1,20 @@
+package com.gmail.nossr50.listeners;
+
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.entity.PlayerDeathEvent;
+
+import com.gmail.nossr50.util.Hardcore;
+import com.gmail.nossr50.util.Permissions;
+
+public class HardcoreListener implements Listener {
+    
+    @EventHandler()
+    public void PlayerDeathEvent(PlayerDeathEvent event) {
+        Player player = event.getEntity(); //Note this returns a Player object for this subevent
+        if(!Permissions.getInstance().hardcoremodeBypass(player)) {
+            Hardcore.invokeStatPenalty(player);
+        }
+    }
+}

src/main/java/com/gmail/nossr50/util/Hardcore.java

@@ -0,0 +1,27 @@
+package com.gmail.nossr50.util;
+
+import org.bukkit.ChatColor;
+import org.bukkit.entity.Player;
+
+import com.gmail.nossr50.config.Config;
+import com.gmail.nossr50.datatypes.PlayerProfile;
+import com.gmail.nossr50.datatypes.SkillType;
+
+public class Hardcore {
+    public static void invokeStatPenalty(Player player) {
+        PlayerProfile PP = Users.getProfile(player);
+        
+        for(SkillType st : SkillType.values()) {
+            if(st.equals(SkillType.ALL))
+                continue;
+            int newValue = (int) (PP.getSkillLevel(st) / Config.getInstance().getHardcoreDeathStatPenaltyPercentage());
+            
+            if(newValue < 0)
+                newValue = 0;
+            
+            PP.modifySkill(st, newValue);
+        }
+        
+        player.sendMessage(ChatColor.GOLD+"[mcMMO] "+ChatColor.DARK_RED+"You've suffered a penalty to your knowledge from death.");
+    }
+}