[Groff-commit] Changes to //var/cvs/groff

[wlemb]

Log from commit: 

Update of /var/cvs/groff/src/include
In directory genba:/vol2/tmp/cvs-serv1394/src/include

Modified Files:
        Makefile.sub 
Log Message:
Implement $GROFF_BIN_PATH environment variable (which defaults to
$bindir) used for child programs of groff and similar wrappers.

* gendefs.sh: Improve documentation.
* Makefile.comm (,man.n), src/include/Makefile.sub (defs.h),
src/preproc/eqn/Makefile.sub (neqn),
src/roff/nroff/Makefile.sub (nroff): Add $(bindir).
* src/preproc/eqn/neqn.sh, src/roff/nroff/nroff.sh: Implement
$GROFF_BIN_PATH.
* src/roff/groff/groff.cc (main): Implement $GROFF_BIN_PATH and
$GROFF_PATH__ (the latter for communication with troff).
* src/roff/troff/input.cc (main): Use $GROFF_PATH__ for $PATH if
set.
* src/roff/nroff/nroff.man, src/roff/groff/groff.man,
doc/groff.texinfo: Document it.