UnionOfRAD/lithium — pull request #476 by hans-d (2012-05-23 19:53:45+00:00)
Title: Fix win delete

...Windows.

The file is checked before an unlink is tried. (this will make the tests run slower but is prefered over a if (!unlink { chmod; unlink }.
See also: http://stringoftheseus.com/blog/2010/12/22/php-unlink-permisssion-denied-error-on-windows/