autoconf: remove some redundant shell indirections
autoconf: remove some redundant shell indirections

They are merely useless now, but would get in the way of future changes.

No semantic change is intended.

Signed-off-by: Stefano Lattarini <efd5b15649c943c26fb76b69835a0b145831b6a9@gmail.com>
Signed-off-by: Junio C Hamano <a6723cc3f76163bf7adb636a73ac3b0ceb3e6b9b@pobox.com>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git