python: Restore the experimental DTrace patch

The old patch had a lot of whitespace differences, and they were failing with
Python 2.7.4. In addition to removing the whitespace differences, configure.in
was removed from the patch, as configure is being patched already.

Closes #19257.
Closes #19203.
Closes #19400.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>