test_many(): open only 100 temp files, not 1000. Some systems don't

allow that many open files per process.  I don't see that 1000 makes
any difference for the test.

Lib/test/test_tempfile.py

@@ -156,7 +156,7 @@ class test__RandomNameSequence(TC):
 
         dict = {}
         r = self.r
-        for i in xrange(1000):
+        for i in xrange(100):
             s = r.next()
             self.nameCheck(s, '', '', '')
             self.failIf(s in dict)