Use https for sourceforge.net links

Improve the web user security, a bit.

libusb.info and libusb.sourceforge.net do not yet support https acceses.

Author: Ludovic Rousseau

index.html

@@ -14,13 +14,13 @@
   </div>
   <div class="menu">
     <ul>
-      <li><a href="http://sourceforge.net/projects/libusb/" id="current">About</a>
+      <li><a href="https://sourceforge.net/projects/libusb/" id="current">About</a>
       </li>
-      <li><a href="http://sourceforge.net/projects/libusb/files/">Downloads</a>
+      <li><a href="https://sourceforge.net/projects/libusb/files/">Downloads</a>
         <ul>
-          <li><a href="http://sourceforge.net/projects/libusb/files/latest/download?source=files">Latest Source (tarball)</a></li>
-          <li><a href="http://sourceforge.net/projects/libusb/files/libusb-1.0/libusb-1.0.18/">Latest Windows Binaries</a></li>
-          <li><a href="http://sourceforge.net/projects/libusb/files/">Other Releases</a></li>
+          <li><a href="https://sourceforge.net/projects/libusb/files/latest/download?source=files">Latest Source (tarball)</a></li>
+          <li><a href="https://sourceforge.net/projects/libusb/files/libusb-1.0/libusb-1.0.18/">Latest Windows Binaries</a></li>
+          <li><a href="https://sourceforge.net/projects/libusb/files/">Other Releases</a></li>
         </ul>
       </li>
       <li><a href="http://libusb.sourceforge.net/api-1.0/">Documentation</a>
@@ -33,8 +33,8 @@
       <li><a href="https://github.com/libusb/libusb/issues">Support</a>
         <ul>
           <li><a href="https://lists.sourceforge.net/lists/listinfo/libusb-devel">Post to Mailing List</a></li>
-          <li><a href="http://sourceforge.net/p/libusb/mailman/search/?mail_list=libusb-devel">Search Mailing List</a></li>
-          <li><a href="http://sourceforge.net/p/libusb/mailman/libusb-devel/">Mailing List Archives</a></li>
+          <li><a href="https://sourceforge.net/p/libusb/mailman/search/?mail_list=libusb-devel">Search Mailing List</a></li>
+          <li><a href="https://sourceforge.net/p/libusb/mailman/libusb-devel/">Mailing List Archives</a></li>
           <li><a href="https://github.com/libusb/libusb/issues/new">Report New Issue</a></li>
           <li><a href="https://github.com/libusb/libusb/issues?sort=created&state=open">Search Existing Issues</a></li>
         </ul>