* src/include/font.h (name_to_glyph): Renamed from
font::name_to_index.
(number_to_glyph): Renamed from font::number_to_index.
(glyph_to_name): Renamed from font::index_to_name.
(glyph_to_number): Renamed from font::index_to_number.
* src/libs/libgroff/nametoindex.cpp: Likewise.
* src/roff/troff/charinfo.h (charinfo::as_glyph): Renamed from
charinfo::get_index.
* src/roff/troff/input.cpp: All callers changed.
* src/roff/troff/node.cpp: Likewise.
* src/libs/libgroff/font.cpp: Likewise.
* src/devices/grops/ps.cpp: Likewise.
* src/devices/grohtml/post-html.cpp: Likewise.
* src/libs/libdriver/printer.cpp: Likewise.