kes Expand new BSOCK class adding signal() and new BNET signals.

kes  Expand new BSOCK class adding signal() and new BNET signals.
kes  Begin enhancing the dot commands adding a new API function
     that returns more information and will make it easier
     to interface to the Director from a program.

git-svn-id: https://bacula.svn.sourceforge.net/svnroot/bacula/trunk@4207 91ce42f0-d328-0410-95d8-f526ca767f89