[ANN] More filtering options in MessageSet (senders browsers, implementors, etc)

> Attached is a changeset that incorporates 2 new options, that I find
> very useful, in the "filter message list..." menu.
>
> - methods in clases with matching names: Use String>>match: to filter by
> class name. Wildcards can be used.
>
> - methods in package: Filter to list to show only methods in a given
> package.  The package is selected from a menu.
>
> There are more places where the packageinfo information can be used. For
> instance, the annotation panel of the browser can be extended to show
> which package owns the method. Any taker?
>
> Cheers,
>
> -- Diego
>
>
> =========================================================================
>> From the preamble:
>
> Two new options to filter MessageSets (senders browsers, implementors, etc).
>
> - Methods in clases with names matching a given string: It uses String>>match:
> so wildchards characters can be used.
> - Methods in Packages: Select a package (from a popup menu) and filter the
> method list considering the PackageInfo information.
>
>
> How to try it:
> --------------
>
> - Open any methods-browser (for instance, look for senders of #hash).
> - Shift click on the panel showing the methods list. (Or plain click and
> select the option 'more...'.
> - Select the option 'filter message list...'.
> - Enjoy the new options:
> - 'methods in clases with matching names'
> - 'methods in package...'
>
>