question on patch files in selinux source package

[John Emrich]

I am running Fedora-18 and have the SELinux policy release 86.fc18.
Installed Packages
> Name        : selinux-policy
> Arch        : noarch
> Version     : 3.11.1
> Release     : 86.fc18
> Size        : 62  
> Repo        : installed
> From repo   : updates
> Summary     : SELinux policy configuration
> URL         : http://oss.tresys.com/repos/refpolicy/
> License     : GPLv2+
> Description : SELinux Reference Policy - modular.
>             : Based off of reference policy: Checked out revision  2.20091117 
I
downloaded the matching source selinux-policy-3.11.1-86.fc18.src.rpm 

When installing this I noticed patch files (but no related documentation)
rpmbuild/SOURCES/policy-f18-base.patch
rpmbuild/SOURCES/policy_contrib-rawhide-roleattribute.patch
rpmbuild/SOURCES/policy-f18-contrib.patch
rpmbuild/SOURCES/policy-rawhide-roleattribute.patch

Are these patches just there for reference or do they also need to be applied on top of
the 86.fc18.src installation?

Thank You 
John Emrich 
847-312-1244 (cell)