move BOOST_USING_STD_MIN and _MAX and BOOST_PREVENT_MACRO_SUBSTITUTION to the config headers, remove boost/minmax.hpp, update coding guidelines

[SVN r23313]

include/boost/config.hpp

@@ -53,9 +53,6 @@
 #  include BOOST_PLATFORM_CONFIG
 #endif
 
-// used in various places to guard against the min/max macros
-#define BOOST_PREVENT_MACRO_SUBSTITUTION
-
 // get config suffix code:
 #include <boost/config/suffix.hpp>
 

include/boost/config/stdlib/stlport.hpp

@@ -167,6 +167,15 @@ namespace std{ using _STLP_VENDOR_CSTD::strcmp; using _STLP_VENDOR_CSTD::strcpy;
 #  undef BOOST_HAS_HASH
 #endif
 
+//
+// gcc-2.95.3/STLPort does not like the using declarations we use to get ADL with std::min/max
+//
+#if defined(__GNUC__) && (__GNUC__ < 3)
+#  include <algorithm> // for std::min and std::max
+#  define BOOST_USING_STD_MIN() ((void)0)
+#  define BOOST_USING_STD_MAX() ((void)0)
+namespace boost { using std::min; using std::max; }
+#endif
 
 #define BOOST_STDLIB "STLPort standard library version " BOOST_STRINGIZE(__SGI_STL_PORT)
 

include/boost/config/suffix.hpp

@@ -285,6 +285,18 @@
     namespace std { using ::ptrdiff_t; using ::size_t; }
 # endif
 
+//  Workaround for the unfortunate min/max macros defined by some platform headers
+
+#define BOOST_PREVENT_MACRO_SUBSTITUTION
+
+#ifndef BOOST_USING_STD_MIN
+#  define BOOST_USING_STD_MIN() using std::min
+#endif
+
+#ifndef BOOST_USING_STD_MAX
+#  define BOOST_USING_STD_MAX() using std::max
+#endif
+
 //  BOOST_NO_STD_MIN_MAX workaround  -----------------------------------------//
 
 #  ifdef BOOST_NO_STD_MIN_MAX