Bug 1262688

Description of problem:

The needs-restarting script output only lists processes that should be restarted but doesn't provide any information about dependencies that actually caused that the restart is needed. 

E.g.:
  4674 : ./testprog

Please introduce a more verbose output (-v option) that would provide information about the dependencies. ATM I am using similar change for debugging purposes on various places of the code:

                if float(pkg.installtime) > float(pid_start):
                    needing_restart.add(pid)
                    found_match = True
+                   print "debug: %s needs restart due to usage of %s from %s" % (pid, just_fn, pkg.name)
                    continue
                if just_fn in pkg.ghostlist:
                    bogon = True

but a more user friendly option would be better. E.g. to have an output as:

  4674 : ./testprog  due to /path/to/library/consumed from libtestpkg-1.0-1

or more compact

  4674 : ./testprog (/path/to/library/consumed from libtestpkg-1.0-1)

or just (as it is easy to find an appropriate package later)

  4674 : ./testprog (/path/to/library/consumed)