Add Boost 1.80.0 patch for Config

feed/history/boost_1_80_0.qbk

@@ -25,6 +25,9 @@ Please keep the list of libraries sorted in lexicographical order.
 These are patches from library authors which were found too late to be fixed
 in the release.
 
+* Config
+  * Support for libcpp15 which removes `std::unary_function` and
+    `std::binary_function`. [@/patches/1_80_0/0005-config-libcpp15.patch Patch].
 * Filesystem
   * Directory iterators may fail to construct for a network share on Windows prior to 10, see [github_pr filesystem 246] and [github filesystem 245].
     [@/patches/1_80_0/0001-filesystem-win-fix-dir-it-net-share.patch Patch].

patches/1_80_0/0005-config-libcpp15.patch

@@ -0,0 +1,17 @@
+diff -urN boost_1_80_0/boost/config/stdlib/libcpp.hpp boost_1_80_1/boost/config/stdlib/libcpp.hpp
+--- boost_1_80_0/boost/config/stdlib/libcpp.hpp	2022-08-03 22:47:07.000000000 -0400
++++ boost_1_80_1/boost/config/stdlib/libcpp.hpp	2022-09-16 22:16:17.044119011 -0400
+@@ -168,4 +168,13 @@
+ #  define BOOST_NO_CXX14_HDR_SHARED_MUTEX
+ #endif
+ 
++#if _LIBCPP_VERSION >= 15000
++//
++// Unary function is now deprecated in C++11 and later:
++//
++#if __cplusplus >= 201103L
++#define BOOST_NO_CXX98_FUNCTION_BASE
++#endif
++#endif
++
+ //  --- end ---

patches/index.html

@@ -40,6 +40,7 @@ https://www.boost.org/development/website_updating.html
               <li><a href="1_80_0/0002-filesystem-fix-weakly-canonical-long-paths.patch">0002-filesystem-fix-weakly-canonical-long-paths.patch</a></li>
               <li><a href="1_80_0/0003-unordered-valid-after-move.patch">0003-unordered-valid-after-move.patch</a></li>
               <li><a href="1_80_0/0004-filesystem-posix-fix-no-at-apis-missing-include.patch">0004-filesystem-posix-fix-no-at-apis-missing-include.patch</a></li>
+              <li><a href="1_80_0/0005-config-libcpp15.patch">0005-config-libcpp15.patch</a></li>
             </ul>
 
             <h2>1.79.0</h2>