Clarify syntax in configure.ac following Vladimir Ivanovic's change.
2008-12-27 Aidan Kehoe <kehoea@parhasard.net>
* configure.ac: Vladimir Ivanovic's change of 2008-09-17 was
effective, but not correct. The original issue was that m4
stripped [], so "char *v[]" in configure.ac became "char *v" in
configure. His change to configure.ac rendered the declaration
"char **v[]", which is effective but confusing; this change
renders it "char **v".
* configure: Regenerate.