[oe] add log4cxx checksum

[Phil Blundell]

On Fri, 2009-06-05 at 12:05 +0100, Lucian Ion wrote:
> +[http://archive.apache.org/dist/logging/log4cxx/log4cxx-0.9.7.tar.gz]
> +md5=fd09abc90b8c0c8af1d5146a75590792
> +sha256=5b41b2fc267595bdb0fa4cd1152309413bc70e6d9196293113ebb82751eb7ec6
> +

Thanks.  I checked this in.

p.