stddoclet: Add member names as meta keyword tags to improve API search

Add name/content keywords. We already use:

  In HTML file:
  <META NAME="keywords" CONTENT="java.lang.String,String class">

  The advantage of using "NAME=keywords" is that we can weight all keywords
  meta tags higher (than body text) for Inktomi searches.
  This page can also be found using Inktomi search query string:
  +keywords:java.lang.String

But we need to do the same thing for methods. We could use "method" as
the name:
  <META NAME="method" CONTENT="compareTo(Object)">

  This can be found using Inktomi query:
  +method:compareTo

or:
  <META NAME="keywords" CONTENT="compareTo() method,Double.compareTo(Object)">

  which can be found using this Inktomi query:
  +keywords:compareTo