Added .git/config to nav.
Fixed exported path.
exec-and-capture-output is now a no-op when make is not silent.
Added tar's deps.
Fixed deps for automatic patches.

Automatic patches are handled in add-patch-deps now. Clients must only
specify the patch's recipe and add the package to the list of patched
packages.
Make and curl finished - started on tar.

Make and curl now download and build. They also set up deps properly
such that subsequent packages are downloaded with the new curl.

Some of tar's deps build. Some do not! The basic form is there but
we may need to patch to get functional builds.