Fixed. The location and name of the config element changed for the jnlp mojos (not the download servlet) as to be more consistent and prepare for multi files generation in the jnlp mojos.
$ svn commit -m "
MWEBSTART-81 non standard jnlp resources directory not taken into account. Decided to make it more similar to what the jnlp-download-servlet does."
Transmitting file data .....
Committed revision 5959.