First implementation for Pathfinder Adventure Path #67: Reign of Winter, Part 1  - The Snows of Summer

git-svn-id: svn+ssh://svn.code.sf.net/p/pcgen/code/Trunk@21920 ef53c05b-3124-4d59-ae7d-fe3273f42be7
Fix invalid CHOOSE tags

git-svn-id: svn+ssh://svn.code.sf.net/p/pcgen/code/Trunk@21921 ef53c05b-3124-4d59-ae7d-fe3273f42be7