Update data/README.

* data/README: Document glr.cc, lalr1.java, m4sugar and xslt.

data/README

@@ -1,31 +1,58 @@
 -*- outline -*-
 
-This directory contains Bison skeletons: the general shapes of the
-different parser kinds, that are specialized for specific grammars by
-the bison program.
+This directory contains data needed by Bison.
 
-Currently, there are only three supported skeletons:
+* Skeletons
+Bison skeletons: the general shapes of the different parser kinds,
+that are specialized for specific grammars by the bison program.
+
+Currently, the supported skeletons are:
 
 - yacc.c
   It used to be named bison.simple: it corresponds to C Yacc
   compatible LALR(1) parsers.
 
 - lalr1.cc
-  Produces a C++ parser class.  It is still very experimental, and not
-  yet supported.  Please, subscribe to bison-patches@gnu.org.
+  Produces a C++ parser class.
+
+- lalr1.java
+  Produces a Java parser class.
 
 - glr.c
   A Generalized LR C parser based on Bison's LALR(1) tables.
 
+- glr.cc
+  A Generalized LR C++ parser.  Actually a C++ wrapper around glr.c.
+
 These skeletons are the only ones supported by the Bison team.
 Because the interface between skeletons and the bison program is not
 finished, *we are not bound to it*.  In particular, Bison is not
 mature enough for us to consider that ``foreign skeletons'' are
 supported.
 
+* m4sugar
+This directory contains M4sugar, sort of an extended library for M4,
+which is used by Bison to instantiate the skeletons.
+
+* xslt
+This directory contains XSLT programs that transform Bison's XML output
+into various formats.
+
+- bison.xsl
+  A library of routines used by the other XSLT programs.
+
+- xml2dot.xsl
+  Conversion into GraphViz's dot format.
+
+- xml2text.xsl
+  Conversion into text.
+
+- xml2xhtml.xsl
+  Conversion into XHTML.
+
 -----
 
-Copyright (C) 2002 Free Software Foundation, Inc.
+Copyright (C) 2002, 2008 Free Software Foundation, Inc.
 
 This file is part of GNU Bison.