Issue #15759: "make suspicious", "make linkcheck" and "make doctest" in Doc/
now display special message when and only when there are failures.
Backout 308f3c1e36d3.  This change (issue21044) does not need to be merged on
2.7, as the os.fdopen sets the name attribute to '<fdopen>' and not to the fd.
Fixed bugs in reprs of CookieJar and multiprocessing.dummy.Value.