marked gzip and zlib tests as expected failures for como (iostreams)

[SVN r29991]

status/explicit-failures-markup.xml

@@ -1024,6 +1024,15 @@
                 compiler can't compile "windows.h" in strict mode
             </note>
         </mark-expected-failures>
+        <mark-expected-failures>
+            <test name="gzip_test"/>
+            <test name="zlib_test"/>
+            <toolset name="como-4_3_3-vc7_1"/>
+            <note author="Jonathan Turkanis">
+                The failure reflects a problem with the build system: the zlib 
+				object files are generated in the wrong directory.
+            </note>
+        </mark-expected-failures>
         <mark-expected-failures>
             <test name="stdio_filter_test"/>
             <toolset name="*como-4_3_3*"/>