Added new config macro BOOST_HAS_MS_INT64 to detect presence of __int64 data type.

Modified boost source to use BOOST_HAS_LONG_LONG and BOOST_HAS_MS_INT64
   where appropriate to do so.


[SVN r13714]

test/config_test.cpp

@@ -10,7 +10,7 @@
 
 // Do not edit this file, it was generated automatically by
 // ../tools/generate from boost_*.cxx on
-// Fri Feb  8 11:29:25  2002
+// Mon May  6 12:58:50 BST 2002
 
 #include <boost/config.hpp>
 #define BOOST_INCLUDE_MAIN
@@ -400,3 +400,4 @@ int test_main( int, char *[] )
    BOOST_TEST(0 == boost_has_two_arg_use_facet::test());
    return 0;
 }
+