fixup
Move instructions on paperspecs format into new paperspecs(5)
Remove redundant headings from paperconfig(8)
Whitespace cleanups.
Use getopt-gnu to live up to the advertised command-line syntax on less-flexible systems.
Preserve order of paper sizes in paperspecs, and try to order them commonest first.
systempapername always returns something, so don't bother checking.
Require, rather than simply attempt to find, C99 compiler.
Remove unused header.
Try to use in-tree paper.h even when libpaper is already installed on the system.
Specify the NULL return when the paper list is exhausted.
Fix and expose unitfactor, and have it return double.

Remove dm from list of allowable units.
Improve paperconf(1) slightly.
Use unitfactor from libpaper to allow paperconf to display dimensions in any known unit
Remove -N option to paperconf, and have a sensible default capitalization in paperspecs.
Remove -z flag from paperconf
Simplify exit logic.
Remove a redundant assignment.
Simplify slightly.
Make whitespace consistent.