Add profiler to compilation-error-regexp-alist

By "profiler" I mean the output you get from using `(require profile)`
and its `profile-thunk`. It's useful to have the file:line:col linkified
as informational by compilation-mode.

One wrinkle is we want to match the file:line:col in output like:

  [10]  54(25.1%)   54(25.1%) foo /Users/greg/src/misc/foo.rkt:11:0

But _not_ elided filenames in output like:

  ...acket_v5.3.5/collects/profile/main.rkt:29:2