[HECnet] RPM on HECnet

In case someone is using RPM on HECnet, and using DECnet as the transport protocol, you need to update your configuration of RPM. The reason is because I moved the RPM repository directory to a new place. In order to avoid any similar problem in the future, please use RPM$DIR: instead of LB:[RPM] which was previously the suggested default when accessing MIM:: You can change your configuration using RPM CONFIG, or edit CONFIG.CMD in your RPM directory. If you edit the file directly, it is the USER variable that should be changed. If people are using RPM with TCP/IP as transport, no changes are needed, and all should work without any disruption.