Added full tile entity data support for all block types that use it, including chests, dispensers, furnaces, mob spawners, and note blocks.

src/main/java/org/bukkit/block/NoteBlock.java

@@ -0,0 +1,22 @@
+package org.bukkit.block;
+
+/**
+ * Represents a note.
+ * 
+ * @author sk89q
+ */
+public interface NoteBlock extends BlockState {
+    /**
+     * Gets the note.
+     * 
+     * @return
+     */
+    public byte getNote();
+    
+    /**
+     * Set the note.
+     * 
+     * @param note
+     */
+    public void setNote(byte note);
+}