Tidy up VC10 config and enable new VC10 feature (numeric_limits::lowest()).

[SVN r66455]

include/boost/config/stdlib/dinkumware.hpp

@@ -107,6 +107,7 @@
 #  define BOOST_NO_0X_HDR_UNORDERED_SET
 #  define BOOST_NO_0X_HDR_TUPLE
 #  define BOOST_NO_0X_HDR_TYPEINDEX
+#  define BOOST_NO_NUMERIC_LIMITS_LOWEST
 #endif
 
 #if !defined(_HAS_TR1_IMPORTS) && !defined(BOOST_NO_0X_HDR_TUPLE)
@@ -125,7 +126,6 @@
 #  define BOOST_NO_0X_HDR_MUTEX
 #  define BOOST_NO_0X_HDR_RATIO
 #  define BOOST_NO_0X_HDR_THREAD
-#  define BOOST_NO_NUMERIC_LIMITS_LOWEST
 
 #ifdef _CPPLIB_VER
 #  define BOOST_DINKUMWARE_STDLIB _CPPLIB_VER