Teach the API about Remote Consoles

This will allow us to raise events for remote consoles, and provide access
to them at a later date. Relates to BUKKIT-220

src/main/java/org/bukkit/command/RemoteConsoleCommandSender.java

@@ -0,0 +1,4 @@
+package org.bukkit.command;
+
+public interface RemoteConsoleCommandSender extends CommandSender{
+}