Create a script to convert old export sheets to FreeMarker
* Convert old single value loops
* Convert early exit loops with a warning
* Make criteria more specific to avoid incorrect conversions.
Issue#: CODE-2624


git-svn-id: svn+ssh://svn.code.sf.net/p/pcgen/code/Trunk@24324 ef53c05b-3124-4d59-ae7d-fe3273f42be7
Provide gamemodename as a variable to FreeMarker sheets
Freemarker function - pchasvar
Issue#: CODE-2629,NEWTAG-458


git-svn-id: svn+ssh://svn.code.sf.net/p/pcgen/code/Trunk@24325 ef53c05b-3124-4d59-ae7d-fe3273f42be7