Mark a few more failures as expected

[SVN r28256]

status/explicit-failures-markup.xml

@@ -493,6 +493,12 @@
             <toolset name="vc7"/>
             <note refid="3" author="Aleksey Gurtovoy"/>
         </mark-expected-failures>
+        <mark-expected-failures>
+          <test name="graphviz_test"/>
+          <toolset name="gcc-2.95.3-linux"/>
+          <toolset name="gcc-2.95.3-stlport-4.5.3-linux"/>
+          <note refid="3" author="Doug Gregor"/>
+        </mark-expected-failures>
     </library>
 
 
@@ -946,6 +952,8 @@ for more information.
             <toolset name="vc7"/>
             <toolset name="gcc-2.95.3-linux"/>
             <toolset name="gcc-2.95.3-stlport-4.5.3-linux"/>
+            <toolset name="sunpro-5_3"/>
+
             <note>
                 <p>
                 Historically, Spirit supported a lot of compilers, including (to some