Merge branch 'ab/avoid-losing-exit-codes-in-tests'

Test clean-up. * ab/avoid-losing-exit-codes-in-tests: tests: don't lose misc "git" exit codes tests: don't lose exit status with "test <op> $(git ...)" tests: don't lose "git" exit codes in "! ( git ... | grep )" tests: don't lose exit status with "(cd ...; test <op> $(git ...))" t/lib-patch-mode.sh: fix ignored exit codes auto-crlf tests: don't lose exit code in loops and outside tests