tools/alpine and tools/guestfs are omitted since they do not currently use
pkg/package.mk and do their own thing. Slightly hacky arrangements are made for
these. Note that previously they were only recursed into for their default
target (push) and that behaviour is retained.
Signed-off-by: Ian Campbell <ijc@docker.com>
Using explicit targets is cleaner and easier to follow.
Also add `forcepush` to pkg and test/pkg and make `push` explicit.
The `dirs` phony was non-existent in all three cases. Likewise `$(DIR)` wasn't
used in that way in pkg or test/pkg and is nolonger used in that way in tools.
Finally, `clean` was bogus in all cases (tools cleaned a thing which never
exists and pkg and test/pkg were a syntax error).
Signed-off-by: Ian Campbell <ijc@docker.com>
