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).

dir_util.py

@@ -207,7 +207,7 @@ def remove_tree (directory, verbose=0, dry_run=0):
             cmd[0](cmd[1])
             # remove dir from cache if it's already there
             abspath = os.path.abspath(cmd[1])
-            if _path_created.has_key(abspath):
+            if abspath in _path_created:
                 del _path_created[abspath]
         except (IOError, OSError), exc:
             log.warn(grok_environment_error(

msvccompiler.py

@@ -239,7 +239,7 @@ class MSVCCompiler (CCompiler) :
 
     def initialize(self):
         self.__paths = []
-        if os.environ.has_key("DISTUTILS_USE_SDK") and os.environ.has_key("MSSdk") and self.find_exe("cl.exe"):
+        if "DISTUTILS_USE_SDK" in os.environ and "MSSdk" in os.environ and self.find_exe("cl.exe"):
             # Assume that the SDK set up everything alright; don't try to be
             # smarter
             self.cc = "cl.exe"