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/Misc/NEWS b/Misc/NEWS
index fa1b8f9..59d08bb 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,8 @@
Core and builtins
-----------------
+- sys.getfilesystemencoding() was added to expose
+ Py_FileSystemDefaultEncoding.
- New function sys.exc_clear() clears the current exception. This is
rarely needed, but can sometimes be useful to release objects