Refactored this code so that Wylie->Tibetan and ACIP->Tibetan

conversions can make use of it.  Hooray for reuse.

source/org/thdl/tib/text/TGCList.java

@@ -0,0 +1,29 @@
+/*
+The contents of this file are subject to the THDL Open Community License
+Version 1.0 (the "License"); you may not use this file except in compliance
+with the License. You may obtain a copy of the License on the THDL web site 
+(http://www.thdl.org/).
+
+Software distributed under the License is distributed on an "AS IS" basis, 
+WITHOUT WARRANTY OF ANY KIND, either express or implied. See the 
+License for the specific terms governing rights and limitations under the 
+License. 
+
+The Initial Developer of this software is the Tibetan and Himalayan Digital
+Library (THDL). Portions created by the THDL are Copyright 2003 THDL.
+All Rights Reserved. 
+
+Contributor(s): ______________________________________.
+*/
+
+package org.thdl.tib.text;
+
+/** A list of {@link TGCPair TGCPairs}.
+ *  @author David Chandler */
+public interface TGCList {
+    /** Returns the number of grapheme clusters in this list. */
+    int size();
+
+    /** Returns the <i>i</i>th grapheme cluster in this list. */
+    TGCPair get(int i);
+}