* rulesets/PythonArithmeticScript.cpp: Implement getting attribute
values from statistics script.
* rulesets/Statistics.cpp, rulesets/Statistics.h,
rulesets/Py_Statistics.cpp, rulesets/Character.cpp,
rulesets/Combat.cpp: Remove hard coded stats for combat
and strength.
* rulesets/mason/world/statistics/Statistics.py: Add test support
for combat and strength stats.
* server/PersistantThingFactory.cpp: Remove debug output.
* rulesets/Script.cpp: Document the script interface.
* rulesets/Task.h: Modify task interface so tasks now expect
the operation that initiated the task to be passed in
to an init function.
* rulesets/Combat.h, rulesets/Combat.cpp: Modify the combat task
methods to match the interface changes.
* rulesets/Character.cpp: Modify Combat use to take account
of interface changes. Prototype using script based
combat.
* rulesets/TaskScript.h, rulesets/TaskScript.cpp: Implement
passing the initialising op through to the script using the
standard scripp operation handling functions.
* rulesets/mason/world/tasks/Combat.py: Add handler for Attack
operation, which should now be passed in at init time.
* rulesets/Combat.cpp: Use Entity::sendWorld() to ensure that
notification of victory or defeat appear to come from the world
rather than one of the combatants.
* rulesets/Combat.cpp: Modify win condition check, so it occurs at
the end of tick. Send notification to winner and loser of combat
using faked Talk ops. Make the loser lose a little health.
* rulesets/Task.h: Make irrelevant() virtual so that each task
class is responsible for doing most of its cleanup.
* rulesets/Movement.h: Make updateNeeded() public so other code
can determine if a character is moving.
* rulesets/Character.h, rulesets/Character.cpp: Add a stamina property.
Add clearTask() used to clear the current running task. Check
if tasks are irrelevant immediatly after setup, or after each
tick, and remove if they are.
* rulesets/Combat.h: Add irrelevant() implementation, and a static
variable defining stamina level below which combat cannot occur.
* rulesets/Combat.cpp: Switch to stamina as the base stat for
combat. Implement checking stamina at setup to ensure
both combatants are fit to fight, and each tick to determine if
someone has lost.
* rulesets/Character.cpp, rulesets/Character.h: Add Attack operation
handler to set up combat when sent by attacker.
* rulesets/Combat.cpp: Fix bootstrap tick op, and return a future tick
op from the tick op handler.
