route point netmail to boss node by default

SBBSecho's default behavior for sending netmail to a point address is to create an outbound packet for the point. Without routing information for the point, the boss node needs to be defined in sbbsecho.ini - if defined, SBBSecho will include the point netmail in a packet for the boss node.

If SBBSecho would automatically pack point netmail for the boss, no manual configuration would be needed for sending mail to points.