update to 2.0.5
changes:
- Works with Firefox 1.5.x and xulrunner 1.8.x
- Compiles with xulrunner 1.9, but a lot of functionality is disabled due
  to being no longer exposed by xulrunner (or not working)
  - MyPortal
  - User stylesheets
  - Remembering passwords
  - http authentication
- Support for external mailers which don't understand mailto: urls is
  completely removed. Pretty much all modern mailers support them now.

(drochner)