t/t1304: set the ACL effective rights mask

Some implementations of setfacl do not recalculate the effective rights
mask when the ACL is modified.  So, set the effective rights mask
explicitly to ensure that the ACL's that are set on the directories will
have effect.

Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t1304-default-acl.sh

@@ -33,6 +33,7 @@ dirs_to_set="./ .git/ .git/objects/ .git/objects/pack/"
 
 test_expect_success 'Setup test repo' '
 	setfacl -m d:u::rwx,d:g::---,d:o:---,d:m:rwx $dirs_to_set &&
+	setfacl -m m:rwx               $dirs_to_set &&
 	setfacl -m u:root:rwx          $dirs_to_set &&
 	setfacl -m d:u:"$LOGNAME":rwx  $dirs_to_set &&
 	setfacl -m d:u:root:rwx        $dirs_to_set &&