* rulesets/ArithmeticFactory.h, rulesets/ArithmeticFactory.cpp:
Fix up ArithmeticFactory code to be in rulesets, and allow
for the case where there is no owner for the script.
* rulesets/Character.cpp, rulesets/Character.h: Remove all traces
of the hard coded statistics property from Character.
* rulesets/Py_Property.cpp: Don't use Py_StatisticsProperty as the
default wrapper for a statistics property because it will no
longer work this way.
* rulesets/Python_API.cpp: Remove the setup for the Statistics
wrapper.
* rulesets/StatisticsProperty.cpp, rulesets/StatisticsProperty.h:
Change the footprint of this class so it is no longer hooked
into part of the Character class, and instead handles looking
up values from the script directly, and owns the script itself.
* server/ArithmeticFactory.cpp, server/ArithmeticFactory.h,
server/EntityFactory.cpp, server/EntityFactory.h,
server/PersistantThingFactory.cpp: Remove setup of hard coded
statistics property.
* rulesets/Statistics.h, rulesets/Statistics.cpp,
rulesets/Py_Statistics.h, rulesets/Py_Statistics.cpp,
rulesets/Makefile.am: Remove clases that are no longer used.