Add -E command line switch (ignore environment variables like PYTHONHOME
and PYTHONPATH).
diff --git a/Python/frozenmain.c b/Python/frozenmain.c
index a03a2f8..efc87d7 100644
--- a/Python/frozenmain.c
+++ b/Python/frozenmain.c
@@ -30,9 +30,9 @@
 
 	Py_FrozenFlag = 1; /* Suppress errors from getpath.c */
 
-	if ((p = getenv("PYTHONINSPECT")) && *p != '\0')
+	if ((p = Py_GETENV("PYTHONINSPECT")) && *p != '\0')
 		inspect = 1;
-	if ((p = getenv("PYTHONUNBUFFERED")) && *p != '\0')
+	if ((p = Py_GETENV("PYTHONUNBUFFERED")) && *p != '\0')
 		unbuffered = 1;
 
 	if (unbuffered) {