Well nothing as i'm using debian, which isn't a rpm based distribution.
email:~# dpkg -s zimbra-core
Package: zimbra-core
Status: install ok installed
Priority: optional
Section: Mail
Maintainer:
build@zimbra.com
Architecture: i386
Version: 4.5.10_GA_1575.DEBIAN3.1
Depends: libidn11, curl, fetchmail
Description: Best email money can buy
But that package is installed by the intaller script, and isn't being "used" as the opt directory was replaced by the old one.