[issue16259] Replace exec() in test.regrtest with __import__

[R. David Murray]

Changes by R. David Murray <rdmurray at bitdance.com>:


----------
resolution:  -> fixed
stage:  -> committed/rejected
status: open -> closed

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue16259>
_______________________________________