[issue13405] Add DTrace probes

[Jesús Cea Avión]

Jesús Cea Avión <jcea at jcea.es> added the comment:

- Line tracing is more efficient and corretly skip the last body line when the loop is done.

- Trace new style classes deletion.

- When creating new style classes, ignore internal classes. Show only user defined classes.

- Solve a possible crash if we are tracing "instance-delete-done" and the deleted instance cascades a class delete (if it was the last reference to the class).

----------

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue13405>
_______________________________________