Issue #18492: Allow all resources when tests are not run by regrtest.py.

This changeset also includes cleanup allowed by this behavior change.
diff --git a/Misc/NEWS b/Misc/NEWS
index 8320b0e..4cf70a6 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -46,6 +46,9 @@
 Tests
 -----
 
+- Issue #18492: All resources are now allowed when tests are not run by
+  regrtest.py.
+
 - Issue #21605: Added tests for Tkinter images.
 
 - Issue #21493: Added test for ntpath.expanduser().  Original patch by