#14490, #14491: add 'sundry'-style import tests for Tools/scripts.

This patch changes a few of the scripts to have __name__=='__main__'
clauses so that they are importable without running.  Also fixes the
syntax errors revealed by the tests.
diff --git a/Tools/scripts/fixcid.py b/Tools/scripts/fixcid.py
index 2d4cd1a..87e2a09 100755
--- a/Tools/scripts/fixcid.py
+++ b/Tools/scripts/fixcid.py
@@ -292,7 +292,7 @@
         if not words: continue
         if len(words) == 3 and words[0] == 'struct':
             words[:2] = [words[0] + ' ' + words[1]]
-        elif len(words) <> 2:
+        elif len(words) != 2:
             err(substfile + '%s:%r: warning: bad line: %r' % (substfile, lineno, line))
             continue
         if Reverse: