Thomas Arendsen Hein <thomas@intevation.de> [Mon, 24 Oct 2011 13:32:23 +0200] rev 15353
posix: workaround for os.path.realpath bug in Python 2.4.1 and before
os.path.realpath didn't resolve symlinks that were the first component of
the path, see http://bugs.python.org/issue1213894