catalyst-auto: squelch all pushd/popd

Have some sed magic, including a negative match.

git grep -l -e pushd -e popd \
| xargs sed -i -r \
  -e '/(pushd|popd)/{ /null/! { s,$, >/dev/null,g } }'

Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>

tools/catalyst-auto-s390x.conf

@@ -29,13 +29,13 @@ pre_build() {
 
   # Symlink the latest stages3 to build from
   for d in ${BUILD_SRCDIR_BASE}/builds/default ; do
-    pushd $d
+    pushd $d >/dev/null
     for f in $(ls stage3-${SUBARCH}-*bz2 | grep -v latest | give_latest_from_dates ) ; do
       of=${f/20[0-9][0-9].[0-9]/latest} # for 20XX.Y stuff
       of=${of/20[0-9][0-9][0-1][0-9][0-9][0-9]/latest} # for $
       ln -sf $f $of
     done
-    popd
+    popd >/dev/null
   done
 }