problems for the LinuxThreads

Add description of new sort options for squeue.1

   ${pklibdir}/src
 o only include srun.wrapper.c if compiling --with-totalview.

keys and +|- for sort order control.

   when parallel debugger attached to all tasks by blocking on SIGCHLD
   before calling waitpid() (gnats:217)

variable and new sinfo.c module, accept multiple node states, underscore
in header removed, data reported in all lower-case, slight changes to
header values.

as a valid value.

"INFINITE".

in a partition (if it were UP on a Quadrics switch then all nodes would
need to have the same processor count).

This bug was sometimes setting a node's state to DRAINING instead of
DRAINED when there were no jobs on that node.

Perform some general code clean-up in those areas.

Convert xmalloc()/strcpy() to xstrdup().

shutdown only).

end_time to zero (previously was just setting the end_time so it looked
like the job ran for a huge time interval).

while fail/if too many then fatal/sleep and retry

 o Block SIGALRM by default
 o Only allow one thread to enter fwd_signal() at a time.

   blocked signals in threads.