Merge branch 'kk/build-portability-fix'

Portability tweak for some shell scripts used while building. * kk/build-portability-fix: Fit to Plan 9's ANSI/POSIX compatibility layer

Junio C Hamano committed Sep 22, 2020 at 12:36 UTC 9a0249959d7035ef1c588fbf012e8132e3bd517d

No changes.