Register command permissions, integrate with the Bukkit help API

Help API support requires a fix in Bukkit to work fully
Allow annotation-free registering of commands with other plugins

src/main/java/com/sk89q/bukkit/util/DynamicPluginCommand.java

@@ -19,6 +19,7 @@
 
 package com.sk89q.bukkit.util;
 
+import com.sk89q.util.StringUtil;
 import org.bukkit.command.CommandExecutor;
 import org.bukkit.command.CommandSender;
 import java.util.Arrays;
@@ -29,18 +30,36 @@ import java.util.Arrays;
 public class DynamicPluginCommand extends org.bukkit.command.Command {
 
     protected final CommandExecutor owner;
+    protected final Object registeredWith;
+    protected String[] permissions = new String[0];
 
-    public DynamicPluginCommand(String[] aliases, String desc, String usage, CommandExecutor owner) {
+    public DynamicPluginCommand(String[] aliases, String desc, String usage, CommandExecutor owner, Object registeredWith) {
         super(aliases[0], desc, usage, Arrays.asList(aliases));
         this.owner = owner;
+        this.registeredWith = registeredWith;
     }
 
     @Override
     public boolean execute(CommandSender sender, String label, String[] args) {
         return owner.onCommand(sender, this, label, args);
     }
-    
+
     public Object getOwner() {
         return owner;
     }
+
+    public Object getRegisteredWith() {
+        return registeredWith;
+    }
+
+    public void setPermissions(String[] permissions) {
+        this.permissions = permissions;
+        if (permissions != null) {
+            super.setPermission(StringUtil.joinString(permissions, ";"));
+        }
+    }
+
+    public String[] getPermissions() {
+        return permissions;
+    }
 }