tooling helper

[Sean Silva]

klimek, could you review this escaping patch? The current escaping
there doesn't look broken (i.e. it looks like valid JSON).

The second patch (about BEAR) LGTM.

btw, I encourage you to share any cool stuff you do with Clang (just
saw that you have more stuff on github). I would like to start an
"external examples" page; if you send a patch starting such a new page
I would be elated (you can use
<http://llvm.org/docs/SphinxQuickstartTemplate.html> as a basis for
the new page).

-- Sean Silva