Boost.Range merge from trunk to release.

This is motivated by the need to correct the istream_range, to correct the adaptors.hpp header file, and correct the return types of various range algorithms.

[SVN r61517]

doc/html/range/utilities/iterator_range.html

@@ -3,7 +3,7 @@
 <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
 <title>Class iterator_range</title>
 <link rel="stylesheet" href="../../../../../../doc/html/boostbook.css" type="text/css">
-<meta name="generator" content="DocBook XSL Stylesheets V1.75.2">
+<meta name="generator" content="DocBook XSL Stylesheets V1.75.1">
 <link rel="home" href="../../index.html" title="Chapter&#160;1.&#160;Range 2.0">
 <link rel="up" href="../utilities.html" title="Utilities">
 <link rel="prev" href="../utilities.html" title="Utilities">
@@ -47,7 +47,7 @@
         limitation is simply propogated from the underlying iterator type.
       </p>
 <a name="range.utilities.iterator_range.synopsis"></a><h5>
-<a name="id730216"></a>
+<a name="id3119597"></a>
         <a class="link" href="iterator_range.html#range.utilities.iterator_range.synopsis">Synopsis</a>
       </h5>
 <p>
@@ -187,7 +187,7 @@
         iterators from the same container.
       </p>
 <a name="range.utilities.iterator_range.details_member_functions"></a><h5>
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+<a name="id3122828"></a>
         <a class="link" href="iterator_range.html#range.utilities.iterator_range.details_member_functions">Details
         member functions</a>
       </h5>
@@ -218,7 +218,7 @@
         </p>
 </blockquote></div>
 <a name="range.utilities.iterator_range.details_functions"></a><h5>
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         <a class="link" href="iterator_range.html#range.utilities.iterator_range.details_functions">Details
         functions</a>
       </h5>