Changed BOOST_PP_EMPTY to only use the variadic version when not VC++. Corrected others to use local version of EMPTY.

include/boost/preprocessor/facilities/empty.hpp

@@ -19,10 +19,14 @@
 #
 # /* BOOST_PP_EMPTY */
 #
-# if BOOST_PP_VARIADICS
+# if BOOST_PP_VARIADICS && !BOOST_PP_VARIADICS_MSVC
 # define BOOST_PP_EMPTY(...)
 # else
 # define BOOST_PP_EMPTY()
 # endif
 #
+# if BOOST_PP_VARIADICS
+# define BOOST_PP_VARIADIC_EMPTY(...)
+# endif
+#
 # endif