Re-added known failures for VC++ 7.1

[SVN r62039]

status/explicit-failures-markup.xml

@@ -1831,6 +1831,12 @@
           <toolset name="*mingw*"/>
           <note author="Jeremiah Willcock" refid="49"/>
         </mark-expected-failures>
+        <mark-expected-failures>
+          <test name="grid_graph_cc"/>
+          <test name="grid_graph_test"/>
+          <toolset name="msvc-7.1"/>
+          <note author="Jeremiah Willcock" refid="2"/>
+        </mark-expected-failures>
         <mark-expected-failures>
           <test name="kolmogorov_max_flow_test"/>
           <test name="max_flow_test"/>