Fix error wrapping stdout when redirecting

Fix error wrapping stdout when redirecting

In some cases (e.g. redirecting stdout to shell), the automatic determination
in ZipFile constructor whether its file argument can seek() and tell() fails.
stdout seems to support both but returns bogus values for tell(), resulting
in negative sizes when writing the archive's end record.

Provide a fix with additional arg force_wrap

Also ensure that CRCs are always correct as suggested in python docs and
stackoverflow