Merge branch 'develop'

Conflicts:
	doc/91_relnotes.qbk
	doc/html/index.html

doc/html/index.html

@@ -144,7 +144,7 @@
 </div>
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
-<td align="left"><p><small>Last revised: February 22, 2016 at 22:36:04 GMT</small></p></td>
+<td align="left"><p><small>Last revised: March 05, 2016 at 22:52:00 GMT</small></p></td>
 <td align="right"><div class="copyright-footer"></div></td>
 </tr></table>
 <hr>