Issue #19106: Add buildbottouch target.
diff --git a/Makefile.pre.in b/Makefile.pre.in
index dc895c0..471b966 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -893,6 +893,9 @@
 		fi
 		$(TESTRUNNER) -j 1 -u all -W --timeout=$(TESTTIMEOUT) $(TESTOPTS)
 
+# Like touch, but also working on 2.7 (where the target is a no-op)
+buildbottouch:	touch
+
 QUICKTESTOPTS=	$(TESTOPTS) -x test_subprocess test_io test_lib2to3 \
 		test_multibytecodec test_urllib2_localnet test_itertools \
 		test_multiprocessing test_mailbox test_socket test_poll \