Fixed the problem where the initial command to a train was being ignored. Notice that if there is no DCS, the RosterNode will just continue to blast speed/FX messages into thin air. Need a meta-time-out to detect genuine abscence of DCS, as opposed to the laggy vnode create process.

git-svn-id: svn+ssh://svn.code.sf.net/p/openlcb/svn/trunk/prototypes/C@2783 87536cb5-86f1-4cdc-8fc6-3f0f71bcd267

Author: Don Goodman-Wilson