Next Borland compiler will support this library

[SVN r37083]

status/explicit-failures-markup.xml

@@ -4674,7 +4674,6 @@ for more information.
         <mark-unusable>
             <toolset name="borland-5.6*"/>
             <toolset name="borland-5.8*"/>
-            <toolset name="borland-5.9*"/>
             <toolset name="cw-8.3*"/>
             <toolset name="msvc-6.5*"/>
             <toolset name="msvc-7.0"/>