gh-pages: update for v37.

* modules/std.getopt.html: Remove.
* classes/std.optparse.html: New file.
* classes/std.container.html, classes/std.list.html,
classes/std.object.html, classes/std.set.html,
classes/std.strbuf.html, classes/std.tree.html, index.html,
modules/std.debug.html, modules/std.functional.html,
modules/std.html, modules/std.io.html, modules/std.math.html,
modules/std.package.html, modules/std.strict.html,
modules/std.string.html, modules/std.table.html: Update.

Signed-off-by: Gary V. Vaughan <gary@gnu.org>