Removed leading comment about this being "introductory" documentation;

compared to most, I'd say this section is fairly thorough.

Fixed \indexsubitem definitions for symbol and token module sub-documents.
Perhaps these should be moved to their own files, but they're awefully
small.

Doc/lib/libparser.tex

@@ -1,7 +1,5 @@
 % libparser.tex
 %
-% Introductory documentation for the new parser built-in module.
-%
 % Copyright 1995 Virginia Polytechnic Institute and State University
 % and Fred L. Drake, Jr.  This copyright notice must be distributed on
 % all copies, but this document otherwise may be distributed as part
@@ -689,6 +687,9 @@ to may change between Python versions.
 
 This module also provides one additional data object:
 
+\renewcommand{\indexsubitem}{(in module symbol)}
+
+
 \begin{datadesc}{sym_name}
 Dictionary mapping the numeric values of the constants defined in this
 module back to name strings, allowing more human-readable
@@ -709,6 +710,9 @@ versions.
 This module also provides one data object and some functions.  The
 functions mirror definitions in the Python C header files.
 
+\renewcommand{\indexsubitem}{(in module token)}
+
+
 \begin{datadesc}{tok_name}
 Dictionary mapping the numeric values of the constants defined in this
 module back to name strings, allowing more human-readable