Merge branch 'topic/adapt'

Merge branch 'topic/adapt'

* topic/adapt:
  Copyright text: change "groff" to "This"
  TODO: join in all (non-contrib) TODOs
  Adapt doc/ (less groff.texinfo)
  Adapt tmac/
  Adapt src/troff (src/roff/troff)
  Adapt src/roff (src/roff/groff)
  Adapt src/nroff (src/roff/nroff)
  Adapt src/ute-tfmtodit (src/utils/tfmtodit)
  Adapt src/ute-pfbtops (src/utils/pfbtops)
  Adapt src/ute-lookbib (src/utils/lookbib)
  Adapt src/ute-lkbib (src/utils/lkbib)
  Adapt src/ute-indxbib (src/utils/indxbib)
  Adapt src/ute-afmtodit (src/utils/afmtodit)
  Adapt src/ute-addftinfo (src/utils/addftinfo)
  Adapt src/pre-tbl (src/preproc/tbl)
  Adapt src/pre-soelim (src/preproc/soelim)
  Adapt src/pre-refer (src/preproc/refer)
  Adapt src/pre-preconv (src/preproc/preconv)
  Adapt src/pre-pic (src/preproc/pic)
  Adapt src/pre-html (src/preproc/html)
  Adapt src/pre-grn (src/preproc/grn)
  Adapt src/pre-eqn (src/preproc/eqn)
  Adapt src/lib-snprintf (src/libs/snprintf)
  Adapt src/lib-roff (src/libs/libgroff)
  Adapt src/lib-driver (src/libs/libdriver)
  Adapt src/lib-bib (src/libs/libbib)
  Adapt src/dev-tty (src/devices/grotty)
  Adapt src/dev-ps (src/devices/grops)
  Adapt src/dev-html (src/devices/grohtml)
  Adapt src/dev-dvi (src/devices/grodvi)
  Adapt man/
  Adapt include (src/include)
  "Adapt" font/
  Adapt contrib/pdfmark
  Adapt contrib/hdtbl
  INSTALL, NEWS, README, TODO: adapt 1 (as stubs)
  Adjust licensing stuff