[PATCH 2/3] t0107: Skip ZIP tests if unzip(1) isn't available

[John Keeping]

On Tue, Apr 09, 2013 at 12:19:16AM +0200, Jason A. Donenfeld wrote:
> On Mon, Apr 8, 2013 at 8:26 PM, John Keeping <john at keeping.me.uk> wrote:
> > Is this based on the jk/use-git-test-suite?  If so can we use skip_all
> > and test_done instead of tests_done?
> 
> Actually, skip_all isn't allowed in the case where a few tests from
> that file have already run.

I hadn't spotted that.  Since we're part way through a test suite, we
should be using test_set_prereq here (like Git does for GUNZIP in
t5000-tar-tree.sh).