bgirard/cleopatra — pull request #22 by nickolay (2012-10-20 20:06:45+00:00)
Title: fix an exception when using JS and callstack prefix filters; add add-on diagnostics

This PR combines three unrelated commits, see the commit comments.

The add-on diagnostics is useful for the startup profile in profile in particular, where it looks like this: http://postimage.org/image/3q3jjqgcr/