Portability patch for Makefile.PL (rt.cpan.org, #2070)

--- ./Makefile.PL

+++ ./Makefile.PL

@@ -24,7 +24,7 @@ else {

 }

 print "Checking $perl_path is the same version as this one...";

-chomp(my $V = `$perl_path -MConfig -le 'print Config->myconfig'`);

+chomp(my $V = `$perl_path -MConfig -le 'print(Config->myconfig())'`);

 if ($V eq Config->myconfig) {

     print "ok\n";

 }