buildroot

package/urg: update homepage and source url

Fetch the source archive from fedora repository since this version of
the source is not available on the project site since it moved to
sourceforge.

Also add the md5 checksum computed by feodra to the *.hash file.

Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>