why cvs port left on stable

[Jack Howarth]

   I am wondering why MacPorts has left their cvs port on the stable 1.11.23 release rather
than upgrading it to the feature 1.12.13 release and using the patches from Apple's cvs-45
release in Xcode 4.6...

http://www.opensource.apple.com/source/cvs/cvs-45/

Is there some reason this port is not being sync'd to Apple's last cvs release (since
that is now deprecated out of Mac OS X with Xcode 5)?
          Jack