Alternate bookmarks interface

Hey everyone,

Here's my latest patch if anyone's interested.  As nice as the bookmarks  
DPI is, I personally prefer a more traditional interface (and since  
Windows doesn't run DPI anyway, I had a good excuse to code one).

The patch itself is here:
   http://dillo-win32.sourceforge.net/patches/31-bookmarks.diff

Some basics:
   - Clicking on the bookmarks button now displays the bookmarks menu.
   - Unclassified bookmarks are displayed at the bottom of the bookmarks  
menu; other sections are displayed as submenus.
   - Right-clicking a bookmark or section (submenu) lets you edit that  
bookmark or section.
   - Middle-clicking a bookmark opens it in a new window or tab, depending  
on your preferences.  (I may also add the ability to middle-click a  
section to open all the bookmarks in separate tabs.)

Right now the code's a little rough around the edges, and the "Bookmark  
this ____" right-click option doesn't work (the bookmarks menu itself is  
fine), but it seems to be fairly stable if you want to try it out and let  
me know what you think.

Cheers,
~Benjamin