Squashed 'third_party/boostorg/preprocessor/' content from commit 56090c5

Change-Id: I8c0a13225778c3751a35945439d5304bd9e639ef
git-subtree-dir: third_party/boostorg/preprocessor
git-subtree-split: 56090c56b5c78418b6dbe8c3c2ba576395152f83
diff --git a/doc/ref/array_pop_front.html b/doc/ref/array_pop_front.html
new file mode 100644
index 0000000..0c3718d
--- /dev/null
+++ b/doc/ref/array_pop_front.html
@@ -0,0 +1,51 @@
+<html>
+  <head>
+    <meta content="text/html; charset=windows-1252" http-equiv="content-type">
+    <title>BOOST_PP_ARRAY_POP_FRONT</title>
+    <link rel="stylesheet" type="text/css" href="../styles.css">
+  </head>
+  <body>
+    <div style="margin-left:  0px;"> The <b>BOOST_PP_ARRAY_POP_FRONT</b> macro
+      pops an element from the beginning of an <i>array</i>.</div>
+    <h4>Usage</h4>
+    <div class="code"> <b>BOOST_PP_ARRAY_POP_FRONT</b>(<i>array</i>) </div>
+    <h4>Arguments</h4>
+    <dl>
+      <dt>array</dt>
+      <dd> The <i>array</i> to pop an element from. </dd>
+    </dl>
+    <h4>Remarks</h4>
+    <div> This macro returns <i>array</i> after removing the first
+      element.&nbsp; If <i>array</i> has no elements, the result of applying
+      this macro is undefined. </div>
+    <div> This macro uses <b>BOOST_PP_REPEAT</b> internally.&nbsp; Therefore,
+      to use the <i>z</i> parameter passed from other macros that use <b>BOOST_PP_REPEAT</b>,
+      see <b>BOOST_PP_ARRAY_POP_FRONT_Z</b> </div>
+    <h4>See Also</h4>
+    <ul>
+      <li><a href="array_pop_front_z.html">BOOST_PP_ARRAY_POP_FRONT_Z</a></li>
+    </ul>
+    <h4>Requirements</h4>
+    <div> <b>Header:</b> &nbsp;<a href="../headers/array/pop_front.html">&lt;boost/preprocessor/array/pop_front.hpp&gt;</a>
+    </div>
+    <h4>Sample Code</h4>
+    <div>
+      <pre>#include &lt;<a href="../headers/array/pop_front.html">boost/preprocessor/array/pop_front.hpp</a>&gt;
+
+#define ARRAY (3, (a, b, c))
+
+<a href="array_pop_front.html">BOOST_PP_ARRAY_POP_FRONT</a>(ARRAY) // expands to (2, (b, c))
+</pre></div>
+    <hr size="1">
+    <div style="margin-left: 0px;"> <i>© Copyright <a href="http://www.housemarque.com"
+          target="_top">Housemarque Oy</a> 2002</i> <br>
+      <i>© Copyright Paul Mensonides 2002<br>
+      </i><i>© Copyright Edward Diener 2013</i><br>
+    </div>
+    <div style="margin-left: 0px;">
+      <p><small>Distributed under the Boost Software License, Version 1.0. (See
+          accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a>
+          or copy at <a href="http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p>
+    </div>
+  </body>
+</html>