Add expected failure for Joachim Faulhaber.

status/explicit-failures-markup.xml

@@ -2068,6 +2068,7 @@
 			<toolset name="msvc-9.0*"/>
 			<toolset name="msvc-10.0*"/>
 			<toolset name="msvc-11.0*"/>
+			<toolset name="msvc-12.0*"/>
 			<note author="Joachim Faulhaber">
 				Compiler error expected for msvc: A minimal example of a class template 'value' that
 				results in syntax error in a subsequent meta function.