apart from "bt", gather files, ipcs and other possible info for the oldest blocked task

[nkshirsagar]

right now we just print a trace of oldest blocked task, but more context sensitive info can be gathered for it, like files, ipcs, open sockets, etc. So gather everything possible for that particular process, since we have done the scripting work to find out its PID, we might as well get all we can about that PID.