stddoclet: Add online search capability to J2SE docs

Add link in the J2SE API docs to Google or Inktomi search.
This is to make it easier for people to be able to search
the docs.

This could either be done by adding a link or
adding a search field to the document. Either one should be labled
"Online Search" rather than just "Search", to make it evident the
search is not local.

Clicking the link or entering text into the field and hitting enter
would open a new window where the search results would appear, and the
user could click to display the HTML page. It is currently
Sun's policy is to use Inktomi, so we are prototyping and improving
the results. All this requires is a change to the docs makefile.
We would not actually implement this unless and until the
search results were satisfying.

This is different from the outstanding request:
4269446 Add downloadable local search engine for the JDK documentation