src/poky:acl: improve ptest packaging

As there's a small number of  test binaries in acl, instead of
installing large chunks of the build tree we can install just those and
use a boilerplate test runner.

Drop 0001-tests-do-not-hardcode-the-build-path-into-a-helper-l.patch and
replace with an explicit -DBASEDIR= flag passed at build time.

Drop 0001-test-patch-out-failing-bits.patch and delete the tests that
fail entirely as they won't work without a specific user/group setup.

Backport a patch from upstream so that some tests don't use excessive
amounts of memory.

Backport a patch from upstream to cater for both glibc and musl's
behaviour with interleaved stdout/stderr, fixing the tests on musl.

Clean up dependencies now that we're not shipping the build system.

(From OE-Core rev: 2d82d5ea612ae6d7ac177f2a2792b3e3fdac1c70)

Signed-off-by: Ross Burton <ross.burtonarm.com>
Signed-off-by: Richard Purdie <richard.purdielinuxfoundation.org>

Author: rossburton