fnmatch improvements

[Bruno Haible]

Corinna Vinschen wrote:
> After the above fail, I tried from scratch with your below patch,
> and I still get
> 
>   $ grep REPLACE_FNMATCH ./config.status
>   S["REPLACE_FNMATCH"]="1"
> 
> Even though
> 
>   $ grep fnmatch log1
>   checking for fnmatch.h... yes
>   checking for fnmatch... yes
>   checking for working POSIX fnmatch... yes
> 
> I'm quite puzzled.

It's sometimes hard to make incremental changes to generated files of the
GNU Build System plus Gnulib. I've therefore recreated a new tarball for you,
at https://haible.de/bruno/gnu/testdir-fnmatch.tar.gz .

The expected result is:
  1. cd testdir-fnmatch-posix
     ./configure
     grep REPLACE_FNMATCH config.status
     (Expected: REPLACE_FNMATCH is 0)
     make
     make check
     (Expected: No test failures)
     cd ..
  2. cd testdir-fnmatch-gnu
     ./configure
     grep REPLACE_FNMATCH config.status
     (Expected: REPLACE_FNMATCH is 1, because of FNM_EXTMATCH)
     make
     make check
     (Expected: No test failures)
     cd ..

Bruno