boost: update obsolete usage of endian API

external/boost/archive/portable_binary_oarchive.hpp

@@ -221,7 +221,7 @@ public:
 //  See http://www.boost.org for updates, documentation, and revision history.
 
 #include <ostream>
-#include <boost/detail/endian.hpp>
+#include <boost/predef/other/endian.h>
 
 namespace boost { namespace archive {
 
@@ -258,7 +258,7 @@ portable_binary_oarchive::save_impl(
     else
         ll = l;
     char * cptr = reinterpret_cast<char *>(& ll);
-    #ifdef BOOST_BIG_ENDIAN
+    #if BOOST_ENDIAN_BIG_BYTE
         cptr += (sizeof(boost::intmax_t) - size);
         if(m_flags & endian_little)
             reverse_bytes(size, cptr);