Undo recent exclusion of test_fork1 and test_zlib. These tests don't

trigger my arbitrary exlusion rule, which is: takes more than 10
seconds of wall clock time on my machine.  If these tests are going to
be skipped, then a boatload of slower tests should be skipped, too.

Makefile.pre.in

@@ -474,7 +474,7 @@ test:		all platform
 
 QUICKTESTOPTS=	$(TESTOPTS) -x test_thread test_signal test_strftime \
 		test_unicodedata test_re test_sre test_select test_poll \
-		test_fork1 test_linuxaudiodev test_sunaudiodev test_zlib
+		test_linuxaudiodev test_sunaudiodev
 quicktest:	all platform
 		-rm -f $(srcdir)/Lib/test/*.py[co]
 		-PYTHONPATH= $(TESTPYTHON) $(TESTPROG) $(QUICKTESTOPTS)