Fixup Solaris support for OpenCSW nrpe package changes

Hi, I've been on leave for a bit, but I finally was able to finish this patch up.  GitHub's telling me I can't automerge, I'm not sure why, I'm 0 commits behind and 0 commits ahead of your master.

Anyway, basically I'm replacing the /opt/csw/etc assets for nrpe.cfg and nrpe.d with Symlinks pointing to the /etc/opt/csw location.  This config location change is one that is being applied to all OpenCSW packages for Solaris.  I don't think my other Solaris support patches are dealing with files in /opt/csw/etc, but I'll probably take this approach with anymore that it can apply to.