mark Accumulators tests for gcc 4.2.1 affected by GCC Bugzilla Bug 33580

[SVN r42462]

status/explicit-failures-markup.xml

@@ -45,6 +45,12 @@
         <toolset name="sun-5.9"/>
         <toolset name="borland-*"/>
       </mark-unusable>
+      <mark-expected-failures>
+          <test name="tail_variate_means"/>
+          <test name="weighted_tail_variate_means"/>
+          <toolset name="gcc-4.2.1*"/>
+          <note author="Boris Gubenko" refid="42"/>
+      </mark-expected-failures>
     </library>
 
     <!-- minmax -->