FBSD 8.1 Libtool Upgrade.

[Keith]

Was going to install NRPE, nagios tool and got this error:

===>   Found libtool-2.2.6b, but you need to upgrade to libtool>=2.4

Now this is a production machine running FBSD 8.1 and:

Dovecot 2.2.9
Postfix 2.7.1

I am a little concerned about updating a library like this, but from what
I have read here:

http://www.freshports.org/devel/libtool

Neither of these programs use libtool to either build or are needed to run.

Those are the only programs that run on this machine except for the usual
out of the box type stuff.

Would it be safe to upgrade libtool?

Thanks,
Keith