major update wrt. new range concepts

[SVN r40962]

doc/portability.html

@@ -36,7 +36,7 @@ href="http://boost.sourceforge.net/regression-logs/developer/range.html">here</a
     <p  >
     Notice also that some compilers cannot do function template ordering properly. 
     In that case one must rely of <a
-      href="boost_range.html#range_result_iterator"><code >range_result_iterator</code></a> 
+      href="boost_range.html#range_iterator"><code >range_iterator</code></a> 
       and a single function definition instead of overloaded versions for const and 
       non-const arguments.