options to avoid overwriting the config file name.

 o old log_init() function should only be called one time, as it now dynamically
   initializes the log mutex.

 o attempt to find absolute path to remote_argv[0] on local node

added preliminary line support to circular_buffer

Add support for daemonizing slurmctld with -d option.

DOWN node to stay that way even after registration.

fixed daemoninze fcntl include
added errcodes

Moved job and job step specific code out of controller.c into pack.c.
Also removed build of list code (for improved speed, this will be
a very commonly used RPC).