tests: fix "KNOWN FAILED" for subtests

It didn't worked for tests with subtests.

Here we consolidate both cases which fixes the issue by the way. This
is basically a rewrite of 7641ccec.

Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
tests: fix hexdump, add ts_finalize

Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
tests, add missing output for hexdump

One file was missing and one was too much.

Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
tests: fix hexdump for big endian

For now endianess dependent subtests have undefined output on
BE systems until sombody re-checks this and provides expected
output files with .BE suffix.

Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
tests: ipcs/limits2 is known to fail

See github issue #51, comment 2
https://github.com/karelzak/util-linux/issues/51

Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
tests: script/race would work with variable loop count

Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
tests, script/race is known to fail

Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>