Merge branch 'topic/earlyfix'
* topic/earlyfix:
CXX peace: src/pre-grn/hgraph.cpp
CXX peace: src/troff/input.cpp
CXX peace: src/pre-eqn/pile.cpp
file_case.{h,cpp}: wether->whether; 2017
tmac/mdoc-syms: add a couple of entries (Anthony J. Bentley)..
man/l_roff-char.7.in: sprinkle *** (Dave Kemper)...
man/l_roff-char.7.in: fix Bernd Warken (Dave Kemper, Werner Lemberg)..
Bugfix: eqn: fix HTML entity (Brian McGuinness)..
man/l_roff.7.in: .tm,.tm1 go to STDERR not STDOUT
Bugfix: PS Name Objects are case-sensitive..
Bugfix: src/dev-ps/ps.cc: fix format (Rich Burridge)..
tmac/pspic.tmac: add -N (groff #50770)