limit number characters for different birth options

[igroglaz]

it will be fun to enchant MAX_ACCOUNT_CHARS setting and to allow to have 1 character for certain mode. eg

1. normal character
2. character for force_descend + no_recall (called "Brave" in T)
3. character for "Ironman" (T zeitnot)

as characters in Brave and Ironman have their own restricted locations, having multiple characters won't lead to cheating :)

[draconisPW]

I need to check how setting "brave", "ironman" and such is done, I don't remember it clearly. If we want an option to restrict the number of characters per mode the game needs to set those options during character creation and be non modifiable afterwards. I know MAngband allows to change them as long as you don't get one experience point but I don't remember how I implemented that for PWMAngband...

[draconisPW]

I checked and PWMAngband doesn't allow modifying birth options at all so we're good to go.