Issue 1342: Python could not start if installed in a directory

with non-ascii characters.

This is the simple fix, which uses the FileSystemEncoding.
Replacing all the char* with unicode strings is a major rewrite,
and needs more thinking.

Python/pythonrun.c

@@ -695,7 +695,7 @@ initstdio(void)
 	PyObject *std = NULL;
 	int status = 0, fd;
 	PyObject * encoding_attr;
-	char *encoding, *errors;
+	char *encoding = NULL, *errors;
 
 	/* Hack to avoid a nasty recursion issue when Python is invoked
 	   in verbose mode: pre-import the Latin-1 and UTF-8 codecs */