Add the -n option back to getopt(); it was lost in r61521.

Lib/test/regrtest.py

@@ -211,7 +211,7 @@ def main(tests=None, testdir=None, verbose=0, quiet=False, generate=False,
 
     test_support.record_original_stdout(sys.stdout)
     try:
-        opts, args = getopt.getopt(sys.argv[1:], 'hvgqxsSrf:lu:t:TD:NLR:wM:',
+        opts, args = getopt.getopt(sys.argv[1:], 'hvgqxsSrf:lu:t:TD:NLR:wM:n',
                                    ['help', 'verbose', 'quiet', 'exclude',
                                     'single', 'slow', 'random', 'fromfile',
                                     'findleaks', 'use=', 'threshold=', 'trace',