Fold libpaper into paperinfo.
Remove paperdone, and expand API functions that are just member accesses.
Simplify treatment of LC_PAPER, and let it override system setting.
Don't unnecessarily duplicate strings.
Move declaration closer to use.
Make 'hard' default paper size the first listed in paperspecs.
Refactor systempapername for clarity.
Remove need for math library.
Add definition of Letter size in whole mm to match GNU libc's langinfo definition.
Remove useless check for file existing.
Turn assert failure into error message.
Make whitespace-clean.
Fix memory leaks.
Fix operation with no command-line argument, only options.
Simplify options recording.
Make placement of whitespace around pointer *s consistent.