master
[build]: Add/update .gitignore files.
src/include/: Update geriatric license notices.
Integrate gxditview into groff's standard directory hierarchy.
[libgroff]: Tweak author notices.
src/include/driver.h: Drop copyright notice.
[libgroff]: `errarg` now handles unsigned longs.
[libgroff,troff]: Refactor nonreturning functions.
[libgroff,troff]: Refactor font load diagnostics.
src/include/include.am: Revise copyright notice.
src/include/: Drop ersatz copyright symbol '(C)'.
src/include/lf.h: Fix code style nit.
[libgroff]: Improve #include discipline (4/5).
[libgroff]: Revise copyright notices.
[libdriver]: Rename `do_file()`.
src/include: Cosmetically revise comment headers.
[libgroff]: Annotate future directions.
[libgroff]: Remove `string::remove_spaces()`.
[libgroff]: Trivially refactor.