Restore set -x in pg_upgrade/test.sh, so the user can see what is being

executed.

contrib/pg_upgrade/test.sh

@@ -71,6 +71,9 @@ logdir=$PWD/log
 rm -rf "$logdir"
 mkdir "$logdir"
 
+# enable echo so the user can see what is being executed
+set -x
+
 $oldbindir/initdb -N
 $oldbindir/pg_ctl start -l "$logdir/postmaster1.log" -o '-F' -w
 if "$MAKE" -C "$oldsrc" installcheck; then