marked up two moe expected failures for sun-5.7-5.8 (iostreams)

[SVN r42658]

status/explicit-failures-markup.xml

@@ -1899,8 +1899,9 @@
             <test name="regex_filter_test"/>
             <test name="restrict_test"/>
             <test name="seekable_file_test"/>
+            <test name="seekable_filter_test"/>
             <test name="sequence_test"/>
-            <test name="restrict_test"/>
+            <test name="slice_test"/>
             <test name="stdio_filter_test"/>
             <test name="tee_test"/>
             <test name="wide_stream_test"/>