21.4.20 configure.in problems

[Stephen J. Turnbull]

Vin Shelton writes:

 > >         dnl Check if the source directory already has a configured system in it.
 > >         if test `pwd` != `sh -c cd $srcdir && pwd`  \
 > >
 > > Please, use quotes:
 > >         if test `pwd` != `sh -c "cd $srcdir && pwd"`  \
 > 
 > Thank you for the feedback.
 > 
 > Therefore, if we had a bug tracking system, I'd mark this bug as WONTFIX.

We should fix the quoting problem, though, since it's trivial to do
so.  At least the Bash man page specifies the argument to -c as "a
string", so it needs quotes if it contains spaces.