many many changes. this is what happens when i have 5 hours on an airplane

many many changes. this is what happens when i have 5 hours on an airplane
in the middle of the day and no book.

- multi-thread dump upon crash
- hook manager caches values of any proc "variables"
- bugfix: broken source handling improved
- speed up querying
- bugfix: sources sometimes aren't added by sup-add
- more widgets: terminal title, statusbar

git-svn-id: svn://rubyforge.org/var/svn/sup/trunk@722 5c8cc53c-5e98-4d25-b20a-d8db53a31250