test-archive: silence stupid messages from GNU tar

Recent versions of GNU tar have apparently decided they're old enough
that it's ok for them to prattle on senselessly about things no one
cares about without anyone objecting. We object; apply duct tape.

tests/test-archive

@@ -58,8 +58,8 b" f = urllib2.urlopen('http://127.0.0.1:%s"
                     % (os.environ['HGPORT'], node, archive))
 sys.stdout.write(f.read())
 EOF
-http_proxy= python getarchive.py "$TIP" gz | gunzip | tar tf - | sed "s/$QTIP/TIP/"
-http_proxy= python getarchive.py "$TIP" bz2 | bunzip2 | tar tf - | sed "s/$QTIP/TIP/"
+http_proxy= python getarchive.py "$TIP" gz | gunzip | tar tf - 2>/dev/null | sed "s/$QTIP/TIP/"
+http_proxy= python getarchive.py "$TIP" bz2 | bunzip2 | tar tf - 2>/dev/null | sed "s/$QTIP/TIP/"
 http_proxy= python getarchive.py "$TIP" zip > archive.zip
 unzip -t archive.zip | sed "s/$QTIP/TIP/"
 
@@ -69,10 +69,10 b' hg archive -t tar test.tar'
 tar tf test.tar
 
 hg archive -t tbz2 -X baz test.tar.bz2
-bunzip2 -dc test.tar.bz2 | tar tf -
+bunzip2 -dc test.tar.bz2 | tar tf - 2>/dev/null
 
 hg archive -t tgz -p %b-%h test-%h.tar.gz
-gzip -dc test-$QTIP.tar.gz | tar tf - | sed "s/$QTIP/TIP/"
+gzip -dc test-$QTIP.tar.gz | tar tf - 2>/dev/null | sed "s/$QTIP/TIP/"
 
 cat > md5comp.py <<EOF
 from mercurial.util import md5
@@ -98,7 +98,7 b' hg archive -t zip -p very/../bad test.zi'
 hg archive --config ui.archivemeta=false -t zip -r 2 test.zip
 unzip -t test.zip
 
-hg archive -t tar - | tar tf - | sed "s/$QTIP/TIP/"
+hg archive -t tar - | tar tf - 2>/dev/null | sed "s/$QTIP/TIP/"
 
 hg archive -r 0 -t tar rev-%r.tar
 if [ -f rev-0.tar ]; then