r78689 enabled the test on more platforms but the buildbot did not like it....

r78689 enabled the test on more platforms but the buildbot did not like it. Using the filesystem encoding might work better. Also see #5604.

Lib/test/test_imp.py

 import imp
-import locale
 import os
 import os.path
 import sys
@@ -86,7 +85,7 @@ class ImportTests(unittest.TestCase):
         # But sources modified to follow generic way for processing pathes.
 
         # the return encoding can be uppercase
-        locale_encoding = locale.getpreferredencoding().lower()
+        fs_encoding = sys.getfilesystemencoding().lower()
 
         # covers utf-8 and Windows ANSI code pages
         # one non-space symbol from every page
@@ -104,11 +103,11 @@ class ImportTests(unittest.TestCase):
             'cp1258' : b'\xc0',
             }
 
-        special_char = known_locales.get(locale_encoding)
+        special_char = known_locales.get(fs_encoding)
         if not special_char:
-            self.skipTest("can't run this test with %s as preferred encoding"
-                          % locale_encoding)
-        decoded_char = special_char.decode(locale_encoding)
+            self.skipTest("can't run this test with %s as filesystem encoding"
+                          % fs_encoding)
+        decoded_char = special_char.decode(fs_encoding)
         temp_mod_name = 'test_imp_helper_' + decoded_char
         test_package_name = 'test_imp_helper_package_' + decoded_char
         init_file_name = os.path.join(test_package_name, '__init__.py')