Merge branch 'bc/acl-test'

* bc/acl-test: t/t1304: make a second colon optional in the mask ACL check t/t1304: set the ACL effective rights mask t/t1304: use 'test -r' to test readability rather than looking at mode bits t/t1304: set the Default ACL base entries t/t1304: avoid -d option to setfacl