[issue15647] isdir should be a local symbol, not exported

[Roundup Robot]

Roundup Robot added the comment:

New changeset bdd1b2228c14 by Matthias Klose in branch '2.7':
- Issue #15647: Make isdir static for windows and posix
http://hg.python.org/cpython/rev/bdd1b2228c14

----------
nosy: +python-dev

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue15647>
_______________________________________