these changes allow for multiple types of fields, and add support
for page_number and page_count.
footer.abw has been updated to make use of this feature, showing
"Page N of M" in the footer.
page numbers, for now, are very simplistic. Numbering always starts
at 1 on the first page and can never be reset. numbers are always
shown as regular Arabic numbers.
-- Eric W. Sink, Software Craftsman eric@abisource.com