(skopeo copy) will soon ALWAYS require a present policy file. So,
install one by (make install), and ensure that integration tests do so
as well.
Also simplifies the usage of install(1) a bit.
So that people don't need to install all dependencies just to build.
Make it so that "make binary" does nothing if nothing changed.
Remove ${DEST}
Signed-off-by: Doug Davis <dug@us.ibm.com>
Validating only committed files is not useful in the natural
$test_everything_passes; commit; push
workflow; the failures will not be caught locally, only by Travis later
(and only if PRs are used instead of direct commits to master).
So, use the working directory state instead of last commit for
validations; and remove misleading comments in checks which already use
the working directory state.
