possibly acceptable workaround for rlm_perl/dlopen problem on Debian

[Enrik Berkhan]

Alan DeKok wrote:
>   I've updated the configure scripts to NOT build rlm_perl if the module
> can't link.

I think you regenerated configure from configure.in revision 1.3 before
checking in, but configure.in is at revision 1.4 in HEAD.

Enrik