Update RELEASE_NOTES with recent changes.

RELEASE_NOTES

 RELEASE NOTES FOR SLURM VERSION 1.4
-12 November 2008 (after SLURM 1.4.0-pre4 released)
+15 January 2009 (after SLURM 1.4.0-pre7 released)
 
 
 IMPORTANT NOTE:
@@ -27,6 +27,11 @@ HIGHLIGHTS
   priority partition will resume once preempting job completes. 
   NOTE: Supported only in SelectType=select/cons_res only as of 12 November 
   2008.
+* Time format of all SLURM command set to ISO 8601 (yyyy-mm-ddThh:mm:ss)
+  unless the configure option "--disable-iso8601" is used at build time.
+* Support added for Sun Constellation system with optimized resource allocation
+  for a 3-dimensional torus interconnect.
+* Support added for IBM BlueGene/P systems.
 
 CONFIGURATION FILE CHANGES (see "man slurm.conf" for details)
 * DefMemPerTask has been removed. Use DefMemPerCPU or DefMemPerNode instead.
@@ -48,10 +53,18 @@ CONFIGURATION FILE CHANGES (see "man slurm.conf" for details)
   state for each job.
 
 COMMAND CHANGES (see man pages for details)
-* --task-mem and --job-mem options have been removed from sall,c sbatch and
+* --task-mem and --job-mem options have been removed from salloc sbatch and
   srun. Use --mem-per-cpu or --mem instead.
-* --ctrl-comm-ifhn-addr option has been removed from the srun comma.d
+* --ctrl-comm-ifhn-addr option has been removed from the srun command (it is 
+  no longer useful).
+
+ACCOUNTING CHANGES
+* Added ability for slurmdbd to archive and purge step and/or job records.
+* Added support for Workload Characterization Key (WCKey) in accounting 
+  records. This is an optional string that can be used to identify the type of
+  work being performed (in addition to user ID, account name, job name, etc.).
 
 OTHER CHANGES
-* The libpmi function PMI_Get_clique_ranks() has been changed to return an
-  array of integers rather than a string to satisfy PMI standard.
+* Modify PMI_Get_clique_ranks() to return an array of integers rather
+  than a char * to satisfy PMI standard. Correct logic in
+  PMI_Get_clique_size() for when srun --overcommit option is used.