Re: [PATCH 5/7] t1302 (core.repositoryversion): style tweaks

> This test is from 2007, which is late enough for the style to be
> recognizably modern but still a while ago.  Freshen it up to
> follow new best practices:
>
>  - guard setup commands with test_expect_setup, so errors at
>   that stage can be caught;
>  - use <<\EOF in preference to <<EOF, to save reviewers the
>   trouble of looking for variable interpolations;
>  - use test_cmp instead of test "$foo" = "$bar", for better
>   output with -v on failure;
>  - indent commands in subshells and let them span multiple lines;
>  - combine the two "gitdir required mode" tests that do not make
>   as much sense alone.
>
> Cc: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>