DATA-1369
PF Bestiary 3- Implement Graveknight defensive abilities into Defense portion of statblock
- Correct ability to not be granted, force user choice

git-svn-id: svn+ssh://svn.code.sf.net/p/pcgen/code/Trunk@22072 ef53c05b-3124-4d59-ae7d-fe3273f42be7