MOF14 — MODL Appendix needs updating

In MOF 1.3 RTF, it was agreed (with some reluctance on my part) that the
spelling of the model element names in the XMI version of the MOF Model
was definitive. This means that the MODL definition of the Model package
in the Appendix is out of date.

In addition, DSTC has made a number of changes to the MODL language
syntax that mean that the version in the MOF 1.3 spec no longer
compiles.

Finally, the URL for the specification of the MODL language is stale.

see above