Get rid of a bunch more has_key() uses. We *really* need a tool for this.

test_aepack now passes.  IDLE still needs to be converted (among others).

Lib/plat-mac/macresource.py

@@ -48,7 +48,7 @@ def need(restype, resid, filename=None, modname=None):
     if modname == '__main__':
         # If we're main we look in the current directory
         searchdirs = [os.curdir]
-    if sys.modules.has_key(modname):
+    if modname in sys.modules:
         mod = sys.modules[modname]
         if hasattr(mod, '__file__'):
             searchdirs = [os.path.dirname(mod.__file__)]