dbm-functions, including dbm_pagfno. Our ndbm DOES NOT provide
it, but instead of being quite, it defines dbm_pagfno as
DBM_PAGFNO_NOT_AVAILABLE. This breaks compiles, of course.
Add the patch, that was on my local system since April, to
undefine the this define and let siag use dbm_pagfno implemented
in libgdbm. They should be compatible...
Submitted by: bento