add pointer to pam_slurm in sourceforge

doc/html/download.shtml

@@ -26,8 +26,13 @@ purposes that we have no control over.</p>
 Pluggable Authentication Module (PAM) for restricting access to compute nodes 
 where SLURM performs resource management. Access to the node is restricted to 
 user root and users who have been allocated resources on that node. <br>
-pam_slurm is available for download from 
-<a href="ftp://ftp.llnl.gov/pub/linux/pam_slurm/">ftp://ftp.llnl.gov/pub/linux/pam_slurm</a>
+pam_slurm is available for download from <br>
+<a href="ftp://ftp.llnl.gov/pub/linux/pam_slurm/">
+ftp://ftp.llnl.gov/pub/linux/pam_slurm</a> and <br>
+<a href="https://sourceforge.net/projects/slurm/">
+https://sourceforge.net/projects/slurm/</a><br>
+The latest stable release is version 1.4.</p>
+
 </ul>
 <h1>Related Software</h1>
 <ul>
@@ -83,6 +88,6 @@ Portable Linux Processor Affinity (PLPA)</a></li>
 
 </ul>
 
-<p style="text-align:center;">Last modified 14 February 2007</p>
+<p style="text-align:center;">Last modified 26 February 2007</p>
 
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