Description:
------------
Running recursive mkdir fails when there is a "." directory in the path:

    <?php mkdir('a/./b', 0755, true) ?>
    PHP Warning:  mkdir(): File exists in Command line code on line 1
    Warning: mkdir(): File exists in Command line code on line 1

When a does not exist, "a" is generated, but "b" is not.
When a exists already, everything is fine.

Note that I cannot use realpath() to sanitize the path because the path does not exist yet.

Test script:
---------------



Actual result:
--------------
$ /opt/phpfarm/inst/bin/php-5.3.6 -v
PHP 5.3.6 (cli) (built: Mar 18 2011 09:27:59) (DEBUG)
Copyright (c) 1997-2011 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2011 Zend Technologies

$ LC_ALL=C ls a
ls: cannot access a: No such file or directory
 
$ /opt/phpfarm/inst/bin/php-5.3.6 -r 'mkdir("a/./b", 0755, true);'
PHP Warning:  mkdir(): File exists in Command line code on line 1

Warning: mkdir(): File exists in Command line code on line 1