Jim Hague <jim.hague@acm.org> [Thu, 04 Dec 2008 13:42:47 +0000] rev 7512
Fix test-acl failure on AIX due to read only LOGNAME.
On AIX /etc/profile sets LOGNAME read only. This causes test-acl to
fail when it comes to set LOGNAME in do_push().
Work around this by using env to set LOGNAME and run the command.