Tests quotes around `` and $() expansions, nested and multiple
expansions, and that escaped quotes are treated as characters by the
parser.
(Bitbake rev: d98130cb4d500c495bc692c56dde3e019f36320a)
Signed-off-by: Antonin Godard <antoningodard@pm.me>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>