Prevent name space conflict on css override

D6 themes allow overriding module and core CSS files. In this way the module css named "content.css" will be overwritten by a theme's "content.css". To prevent fails overwrites it would be good if IMCE would use a "imce.css" filename that is named like the module themself as this would stop name space conflicts with other module or theme files named the same way.

See http://i27.tinypic.com/2q0n89f.png how this overriding destroys IMCE.

The patch attached simply changes the name of the "content.css" to "icme.css" - nothing else and prevent a name space conflict.