[PATCH] sed: remove obsolete advice from --help output

[Jim Meyering]

While preparing the attached patch, I discovered a missing dependency bug.
To demonstrate, run "touch sed/sed.c; rm -f sed/sed; make", and witness this:

...
Making all in .
make[2]: Entering directory '/home/j/w/co/sed'
./build-aux/help2man --name "stream editor for filtering and
transforming text" \
  -p sed --include ./doc/sed.x \
  -o ./doc/sed.1 ./sed/sed
  CC       sed/sed_sed-sed.o
help2man: can't get `--help' info from ./sed/sed
Makefile:7112: recipe for target 'doc/sed.1' failed
make[2]: *** [doc/sed.1] Error 127
make[2]: *** Waiting for unfinished jobs....
make[2]: Leaving directory '/home/j/w/co/sed'
Makefile:4406: recipe for target 'all-recursive' failed
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory '/home/j/w/co/sed'
Makefile:2188: recipe for target 'all' failed
make: *** [all] Error 2

A patch for that and a few other issues is coming next.

sed-remove-obsolete-help-advice.diff
Description: Text document