tighten up libtool fixup; add tests and skip keys #315

Job	Run time
unit-tests	27s
local-edit-tests	1m 28s
unavailable	28s
stark.com/foo@1.2.3 (mac)	37s
pyapp.com/pip (linux)	1m 31s
fix-machos.com (linux)	1m 20s
pyapp.com/pip (mac)	58s
toolchain.com (linux)	1m 19s
stark.com/foo (mac)	48s
toolchain.com (mac)	53s
stark.com/foo@1.2.3 (linux)	1m 20s
version-transformer.com (mac)	45s
pyapp.com/poetry (linux)	1m 33s
version-transformer.com (linux)	1m 19s
git-clone.com (mac)	55s
pc-cmake.com (mac)	40s
fix-machos.com (mac)	48s
pc-cmake.com (linux)	1m 23s
stark.com/foo (linux)	2m 9s
pyapp.com/poetry (mac)	1m 18s
fixups.org (mac)	43s
fixups.org (linux)	1m 24s
git-clone.com (linux)	1m 19s
	25m 25s

Provide feedback