vc-7_1-stlport maked as not-supported for string_algo lib

[SVN r34535]

status/explicit-failures-markup.xml

@@ -68,6 +68,7 @@
             <toolset name="borland"/>
             <toolset name="msvc"/>
             <toolset name="vc-6_5*"/>
+            <toolset name="vc-7_1-stlport"/>
             <toolset name="msvc-6.5*"/>
             <toolset name="iw-7_1-vc6"/>
             <toolset name="gcc-2.95.3-linux"/>