Always initialize Py_FileSystemDefaultEncoding on Unix in Py_Initialize,
and not as a side effect of setlocale. Expose it as sys.getfilesystemencoding.
Adjust test case.
diff --git a/Python/sysmodule.c b/Python/sysmodule.c
index 13b86f2..fa7f3c4 100644
--- a/Python/sysmodule.c
+++ b/Python/sysmodule.c
@@ -236,6 +236,22 @@
 Set the current default string encoding used by the Unicode implementation."
 );
 
+static PyObject *
+sys_getfilesystemencoding(PyObject *self)
+{
+	if (Py_FileSystemDefaultEncoding)
+		return PyString_FromString(Py_FileSystemDefaultEncoding);
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+
+PyDoc_STRVAR(getfilesystemencoding_doc,
+"getfilesystemencoding() -> string\n\
+\n\
+Return the encoding used to convert Unicode filenames in\n\
+operating system filenames."
+);
+
 #endif
 
 /*
@@ -649,6 +665,10 @@
 #ifdef DYNAMIC_EXECUTION_PROFILE
 	{"getdxp",	_Py_GetDXProfile, METH_VARARGS},
 #endif
+#ifdef Py_USING_UNICODE
+	{"getfilesystemencoding", (PyCFunction)sys_getfilesystemencoding,
+	 METH_NOARGS, getfilesystemencoding_doc}, 
+#endif
 #ifdef Py_TRACE_REFS
 	{"getobjects",	_Py_GetObjects, METH_VARARGS},
 #endif