Implement: Use AbstractStringToken where practical
Issue#: CODE-2531


git-svn-id: svn+ssh://svn.code.sf.net/p/pcgen/code/Trunk@23446 ef53c05b-3124-4d59-ae7d-fe3273f42be7
Implement: Support use of formulas for MINLEVEL in CHOOSE:SPELLLEVEL
Issue#: NEWTAG-202


git-svn-id: svn+ssh://svn.code.sf.net/p/pcgen/code/Trunk@23447 ef53c05b-3124-4d59-ae7d-fe3273f42be7