Message4956

os.path.exists returns False incorrectly for some UNC directories. I'm
not sure what the particular reasons are.  This is inconsistent with at
least CPython 2.5

For example in CPython 2.5.2:

>>> import os
>>> os.path.exists(u'\\\\cbmcc-fn-00020c\\1202\\RTMO')
True
>>> os.path.exists(u'\\\\cbmcc-fn-00020c\\1202\\RTMO\\')

Jython 2.5.0:

>>> import os
>>> os.path.exists(u'\\\\cbmcc-fn-00020c\\1202\\RTMO')
False
>>> os.path.exists(u'\\\\cbmcc-fn-00020c\\1202\\RTMO\\')
False

This is inconsitent even in Jython - sometimes, I get True, sometime
False.  For example - a different directory will report True for the
path without the trailing slash, but False for the path with the
trailing slash.