acl-permissions: more porting to AIX * lib/file-has-acl.c (file_has_acl) [HAVE_STATACL]: * lib/readutmp.c (read_utmp) [UTMP_NAME_FUNCTION]: * lib/set-permissions.c (set_acls) [HAVE_ACLX_GET && ACL_AIX_WIP]: Add cast for AIX, whose system calls are declared to accept char * even though the arguments are really char const *. * lib/mountlist.c (read_file_system_list) [MOUNTED_VMOUNT]: Rework types to pacify xlc.