gcc 2.95.3 just isn't worth working around anymore

[SVN r25092]

status/explicit-failures-markup.xml

@@ -403,6 +403,7 @@
       <test name="tribool_io_test">
         <mark-failure>
           <toolset name="msvc-stlport"/>
+          <toolset name="gcc-2.95.3-linux"/>
           <note author="Douglas Gregor" date="27 Jul 2004" refid="4"/>
         </mark-failure>
       </test>