NF+TST: add arch analysis on copied libs + report

Add function to analyze architectures of copied libs for missing
architectures.
Add function to report errors in architectures
Test both
RF: make fakepkg1 library dual arch

Was only single arch, making it hard to test arch check of wheel (it is
going to fail).
NF: add ability to check wheel architectures

Check copied libraries when delocating wheels, if asked, and raise an
error if there are missing architectures.
RF: add script option to check archs and test

Add option to run check of architectures during wheel delocation.
RF: move script arch tests into their own test
NF: InWheel context manager

Context manager to do things inside wheels.
NF: check for presence of particular archs

Expand args to `check_archs` to require particular archictures to be
present for all libraries in a wheel.
RF: use InWheel context manager for patches

Refactor to use context manager for patching wheels.
RF: refactor arch check test utility functions

Break _fix_break into two functions - call the original _fixed_wheel,
then a call to _thin_lib. Add ability to thin the extension module as
well.
BF: update rebuilt binary wheel with extensions

Odd stuff happening where the library install names were not correctly
set for both architectures.  This was because I didn't rebuild the wheel
when I added the dual-arch depended library. Rebuild it now.
RF: use require_archs argument to delocate_wheel

Use refactored require_arch argument to check_archs in delocate wheel,
and test.
NF: add require_archs flag to delocate-wheel

Add ability to require particular architectures from delocate-wheel
script and test.
RF: refactor reports of check_archs for clarity

Show cases where required archs are missing differently from cases where
linked libraries are missing archs.
DOC: describe --require-archs option in README

A little section on using the new ``--require-archs`` option.
RF: remove some unused imports
TST: test overlong tuples fail for bads_report
RF: update to latest terryfy