On Windows, ClasspathPathResolver#resolve() doesn't work properly.

Hi,
[ClasspathPathResolver#resolve()](http://goo.gl/Wa6vY) doesn't work properly when that was called with the 'path' that has two or many separator(\) on Windows.

For example, when the 'path' is '.\static\css\bootstrap.css', 
[cl.getResource(path.toString())](http://goo.gl/mpSEM) returned 'file:src/main/resources/.%5cstatic%5ccss%5cbootstrap.css'.