Add change note for #975 [skip ci]

CHANGES.rst

@@ -26,7 +26,7 @@
   would cause callers using keyword arguments to raise a :exc:`TypeError`.
   Reported in :issue:`960` by js6626069. Likewise, correct the
   argument names for ``fromfd`` and ``socketpair`` on Python 2,
-  although they cannot be called wit keyword arguments under CPython.
+  although they cannot be called with keyword arguments under CPython.
 
   .. note:: The ``gethost*`` functions take different argument names
             under CPython and PyPy. gevent follows the CPython
@@ -37,6 +37,9 @@
   exception object is stateful, including references to its context
   and possibly traceback, which could lead to objects remaining alive
   longer than intended.
+- Make sure that ``python -m gevent.monkey <script>`` runs code in the
+  global scope, not the scope of the ``main`` function. Fixed in
+  :pr:`975` by Shawn Bohrer.
 
 1.2.1 (2017-01-12)
 ==================

src/gevent/monkey.py

@@ -672,9 +672,9 @@ def main():
         __package__ = None
         assert __package__ is None
         globals()['__file__'] = sys.argv[0]  # issue #302
-        # Clear package so exec'd script doesn't appear in gevent package
-        globals()['__package__'] = None
+        globals()['__package__'] = None # issue #975: make script be its own package
         with open(sys.argv[0]) as f:
+            # Be sure to exec in globals to avoid import pollution. Also #975.
             exec(f.read(), globals())
     else:
         print(script_help)