patch 8.2.1439: tiny and small builds have no test coverage

Problem:    Tiny and small builds have no test coverage.
Solution:   Restore tests that do not depend on the +eval feature.
            (Ken Takata, closes #6696)
diff --git a/src/testdir/Make_vms.mms b/src/testdir/Make_vms.mms
index f36ae6e..2adc0f4 100644
--- a/src/testdir/Make_vms.mms
+++ b/src/testdir/Make_vms.mms
@@ -4,7 +4,7 @@
 # Authors:	Zoltan Arpadffy, <arpadffy@polarhome.com>
 #		Sandor Kopanyi,  <sandor.kopanyi@mailbox.hu>
 #
-# Last change:  2020 Jul 03
+# Last change:  2020 Aug 13
 #
 # This has been tested on VMS 6.2 to 8.3 on DEC Alpha, VAX and IA64.
 # Edit the lines in the Configuration section below to select.
@@ -37,7 +37,9 @@
 
 .SUFFIXES : .out .in
 
-SCRIPT = test1.out test77a.out
+SCRIPT = test20.out test21.out test22.out test23.out test24.out \
+	 test25.out test26.out test27.out \
+	 test77a.out
 
 .IFDEF WANT_GUI
 GUI_OPTION = -g