footermap 5.x-2.0

The 5.x release of footermap includes:

• new feature: recurse_limit and top_menu settings ported from DRUPAL-4-7 branch. The top_menu default is menu_primary_menu, which is normally 0.
• database abstraction: should work in both mysql and postgresql
• fixed mid issue for 5.x: still need to work on a dynamic method of grabbing this, then all versions are compatible.
• removed useless $baseurl variable
• new feature: caching. caches footermap
• new feature: enabled menus. choose which top menus you want displayed.