mark up accumulators library test weighted_kurtosis for acc toolset

[SVN r42505]

status/explicit-failures-markup.xml

@@ -51,6 +51,11 @@
           <toolset name="gcc-4.2.1*"/>
           <note author="Boris Gubenko" refid="42"/>
       </mark-expected-failures>
+      <mark-expected-failures>
+          <test name="weighted_kurtosis"/>
+          <toolset name="acc"/>
+          <note author="Boris Gubenko" refid="38"/>
+      </mark-expected-failures>
     </library>
 
     <!-- minmax -->