Need to signal -pgrp to get to all members of a process group.

Thanks to Ted Sussman for the report and patience in tracking it down

Signed-off-by: Ralph Castain <rhc@open-mpi.org>

orte/mca/odls/default/odls_default_module.c

@@ -181,7 +181,7 @@ static int odls_default_kill_local(pid_t pid, int signum)
          * child processes our child may have
          * started
          */
-        pid = pgrp;
+        pid = -pgrp;
     }
 #endif