* import.c (get_module): total rewrite, to ensure proper search order: for
  each dir in sys.path, try each possible extension.  (Note: C extensions
  are loaded before Python modules in the same directory, to allow having
  a C version used when dynamic loading is supported and a Python version
  as a back-up.)
* import.c (reload_module): test for error from getmodulename()
* moduleobject.c: implement module name as dict entry '__name__' instead
  of special-casing it in module_getattr(); this way a module (or
  function!) can access its own module name, and programs that know what
  they are doing can rename modules.
* stdwinmodule.c (initstdwin): strip ".py" suffix of argv[0].
diff --git a/Modules/stdwinmodule.c b/Modules/stdwinmodule.c
index 1fff814..fc81cff 100644
--- a/Modules/stdwinmodule.c
+++ b/Modules/stdwinmodule.c
@@ -2598,6 +2598,7 @@
 {
 	object *m, *d;
 	static int inited = 0;
+	char buf[1000];
 
 	if (!inited) {
 		int argc = 0;
@@ -2607,6 +2608,18 @@
 			if (!checkstringlist(sys_argv, &argv, &argc))
 				err_clear();
 		}
+		if (argc > 0) {
+			/* If argv[0] has a ".py" suffix, remove the suffix */
+			char *p = strrchr(argv[0], '.');
+			if (p != NULL && strcmp(p, ".py") == 0) {
+				int n = p - argv[0];
+				if (n >= sizeof(buf))
+					n = sizeof(buf)-1;
+				strncpy(buf, argv[0], n);
+				buf[n] = '\0';
+				argv[0] = buf;
+			}
+		}
 		winitargs(&argc, &argv);
 		if (argv != NULL) {
 			if (!putbackstringlist(sys_argv, argv, argc))