Recorded merge of revisions 81364 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/branches/py3k

........
  r81364 | victor.stinner | 2010-05-19 22:40:50 +0200 (mer., 19 mai 2010) | 3 lines

  Issue #8766: Initialize _warnings module before importing the first module.
  Fix a crash if an empty directory called "encodings" exists in sys.path.
........

Python/pythonrun.c

@@ -264,6 +264,9 @@ Py_InitializeEx(int install_sigs)
 
     _PyImportHooks_Init();
 
+    /* Initialize _warnings. */
+    _PyWarnings_Init();
+
 #if defined(HAVE_LANGINFO_H) && defined(CODESET)
     /* On Unix, set the file system encoding according to the
        user's preference, if the CODESET names a well-known
@@ -284,7 +287,6 @@ Py_InitializeEx(int install_sigs)
         initsigs(); /* Signal handling stuff, including initintr() */
 
     /* Initialize warnings. */
-    _PyWarnings_Init();
     if (PySys_HasWarnOptions()) {
         PyObject *warnings_module = PyImport_ImportModule("warnings");
         if (!warnings_module)