Python executable and not removed by the linker's optimizer.

Python executable and not removed by the linker's optimizer.

changed output of debug messages to say "path" or "file"
extended test for filtering  certain files in a package
added test for filtering files in a python dir (no package)

This should have no effect, it's a "shouldn't happe" case.
Also tidied up some comments.

Without ERR_load_crypto_strings() functions like ERR_lib_error_string() return NULL.

Issue #19030: final pieces for proper location of various class attributes located in the metaclass.

Okay, hopefully the very last patch for this issue.  :/

I realized when playing with Enum that the metaclass attributes weren't always displayed properly.

New patch properly locates DynamicClassAttributes, virtual class attributes (returned by __getattr__ and friends), and metaclass class attributes (if they are also in the metaclass __dir__ method).

Also had to change one line in pydoc to get this to work.

Added tests in test_inspect and test_pydoc to cover these situations.