[patch]: Make windres ignoring empty comma arguments for rcdata

[Nick Clifton]

Hi Kai,

> 2008-12-18  Kai Tietz  <kai.tietz@onevision.com>
> 
>         * rcparse.y (rcdata_data): Allow empty comma elements.

Approved - please apply.

(Sorry for the delay - I have been on holiday).

Cheers
   Nick