UC-1676 - Init Scripts stop more processes than they should
http://track.sipfoundry.org/browse/UC-1676

Modified core processes scripts and mongod-arbiter script

When searching for processes the path to the executable is used now
istead of just searching by program name

-extra changes non-related to the issue :
  -extended sipxconfig wait time for process to listen on port from 30 seconds to 50 seconds