Issue #8713: Support alternative start methods in multiprocessing on Unix.
See http://hg.python.org/sandbox/sbt#spawn
diff --git a/Makefile.pre.in b/Makefile.pre.in
index 881d945..ca404cd 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -938,7 +938,9 @@
QUICKTESTOPTS= $(TESTOPTS) -x test_subprocess test_io test_lib2to3 \
test_multibytecodec test_urllib2_localnet test_itertools \
- test_multiprocessing test_mailbox test_socket test_poll \
+ test_multiprocessing_fork test_multiprocessing_spawn \
+ test_multiprocessing_forkserver \
+ test_mailbox test_socket test_poll \
test_select test_zipfile test_concurrent_futures
quicktest: all platform
$(TESTRUNNER) $(QUICKTESTOPTS)