GNU m4 bootstrap script still creates a 'm4/.cvsignore' file

[Stefano Lattarini]

Like this:

    $ ./bootstrap
    bootstrap: creating initial m4/.cvsignore
    ...
    $ cat m4/.cvsignore
    # files created by gnulib, but that gnulib doesn't track
    *~
    .cvsignore
    .gitignore
    gnulib-comp.m4
    # gnulib-tool edits below here
    00gnulib.m4
    alloca.m4
    ...

But that seems unwarranted, since m4 has remove support for and use of
.cvsignore files in recent commit v1.4.16-15-g47c48ce, "maint: drop CVS
cruft".  Not a big deal of course, but I thought you might want to be
informed anyway (I'm not attempting a patch because I believe I've
already filled my quota of modifications before having to sign yet
another copyright assignment form).

Regards,
  Stefano