Added markup for toolsets that have changed name.

[SVN r35312]

status/explicit-failures-markup.xml

@@ -1506,6 +1506,8 @@
         <mark-expected-failures>
           <test name="graphviz_test"/>
           <toolset name="vc-8_0"/>
+          <toolset name="msvc-8_0"/>
+          <toolset name="intel-vc71-win-9.1"/>
           <note refid="1" author="Doug Gregor"/>
         </mark-expected-failures>
         <mark-expected-failures>