* contrib/pic2graph/pic2graph.*: Use convert(1).

* contrib/pic2graph/pic2graph.*: Use convert(1).
* contrib/eqn2graph/eqn2graph.*: Minor fixes.

* tmac/groff_trace.man: New file.
* tmac/Makefile.sub: Updated.
* NEWS: Updated.

* src/roff/groff/groff.man: Add some cross references.

* src/roff/troff/input.cc (substring_request): Add warnings for
string indices out of range.

* font/devdvi/generate/ec.map: Fix typo (`(l' -> `/l').
* font/devdvi/*EC: Regenerated.

* man/groff_char.man: Updated and extended.

* src/roff/troff/input.cc (length_macro): Renamed to...
(length_request): This.
Move call of `tok.next()' to the very end, otherwise the register
value hasn't been updated yet.
(init_input_requests): Updated.

* src/roff/troff/input.cc (substring_macro): Renamed to...
(substring_request): This.
(init_input_requests): Updated.
* src/roff/troff/request.h: Updated.

* src/roff/grog/grog.sh: Fix typo.

* win32-diffs: Updated.

Handle `papersize' keyword properly in DESC.

* src/libs/libgroff/font.cc (font::scan_papersize): Fix argument
type.
Updated all callers.
* src/libs/libgroff/paper.cc: Add four more paper formats used by
grolj4.
* src/include/paper.h: Updated.

* src/devices/grolbp/lbp.cc: Remove unnecessary semicolons.
Other minor C syntax fixes.
(papersize, paperlength, paperwidth): Renamed to `user_*'.
(lbp_printer): Add `papersize', `paperlength', and `paperwidth'
members.
(lbp_printer::lbp_printer): Pass three arguments.
Set paper dimensions properly.
(make_printer, main): Updated.
(handle_unknown_desc_command): Fix error messages.
(main): Handle papersize keyword in DESC properly.

* src/devices/grolj4/lj4.cc (paper_size): Renamed to
`user_paper_size'.
(lbp_printer::lbp_printer): Pass an argument.
Set paper_size properly.
(handle_unknown_desc_command): Removed.
(make_printer, main): Updated.
* src/devices/grolj4/grolj4.man: Minor documentation fix.

* man/groff_font.man, NEWS: Updated.