Modify give command to support 1.7 features. Fixes BUKKIT-5286

Necessary additions include an interface to add internal value conversions
that are inappropriate for proper API design. This acts as a substitute
for properly formed, user-friendly commands in an effort to maintain
relatively vanilla behavior.

src/main/java/org/bukkit/Server.java

@@ -799,4 +799,10 @@ public interface Server extends PluginMessageRecipient {
      * @return the idle timeout in minutes
      */
     public int getIdleTimeout();
+
+    /**
+     * @see UnsafeValues
+     */
+    @Deprecated
+    UnsafeValues getUnsafe();
 }