[omniORB] termination of orb->run()

[Jian Deng]

it seems to me that, in echo examples, the impl code exits inside
orb->run() upon getting SIGTERM or SIGINT.  just wondering how could
anything be done after the line,

   ...
   orb->run();

to perform chores such as calling destructors and cleaning up.

thanks,
- jd