Added a note of clarification to checkpoint_blcr.shtml

doc/html/checkpoint_blcr.shtml

@@ -16,6 +16,10 @@ Functionality provided includes:
 node failure</li>
 </ol></p>
 
+<b>Note:</b> checkpoint/blcr cannot restart interactive jobs. It can
+create checkpoints for both interactive and batch steps, but only
+batch jobs can be restarted.
+
 <h2>User Commands</h2>
 
 <p>The following documents SLURM changes specific to BLCR support.
@@ -161,6 +165,6 @@ or reading job checkpoint files</li>
 
 <p class="footer"><a href="#top">top</a></p>
 
-<p style="text-align:center;">Last modified 11 March 2009</p>
+<p style="text-align:center;">Last modified 1 December 2009</p>
 
 <!--#include virtual="footer.txt"-->