Iashol fundamentals

This commit is meant to include all foundational changes for Iashol that
make the god work at a basic level.
Improve Iashol's description
Iashol first star ability

This commit adds Iashol's * ability, which presently causes monsters to
skip turns proportionally to your current piety.
Iashol **

Setting up Iashol's ** power, which automatically retaliates with status
effects on monsters that damage the adherent based on the player piety
and the amount of damage.
Iashol ***

Iashol's *** power, which restores HP and MP in exchange for drain and exhaustion.
Iashol **** power: Power Leap

This power allows the player to cblink 3 tiles and do damage to every
enemy surrounding the landing tile. Sets exhaustion.
Iashol ***** power: Cataclysm

This power deals heavy damage and potentially strong statuses to all
enemies within LOS. It costs significant drain and exhaustion.
Iashol sacrifices and Sac Evocations/Dodging/Armour/Stealth

Setting up the Iashol sacrifice infrastructure and implementing the
sacrifices which ban all use of evocables, all dodging skill, all armour
skill, and all stealth.

Iashol sacrifice: Armour, Dodging, Stealth

These sacrifices allow you to lock out a basic utility skill completely.
Iashol sacrifice: Love

This sacrifice makes all monsters hostile to the player, even summons.
Iashol sacrifice: Missing Hand

This sacrifice prevents the player from using a shield or a two-handed
weapon and removes a ring slot. Octopodes still get 7 other rings.
Iashol sacrifice: Sanity

This sacrifice causes the player to fear blood, receiving accuracy,
damage, and wizardry bonuses while bloody tiles are visible.
Iashol sacrifice: Words and Potions

These sacrifices gives the player the -Potions and -Scrolls statuses
when they're damaged. The duration of the status and the likelihood that
it will be applied both increase as damage increases.
Iashol sacrifice: Arcana

This sacrifice removes the player's ability to cast spells or train the
schools affect. Each sacrifice removes one of {Charms, Conurations,
Summonings, Translocations}, one of {Transmutation, Necromancy, Hexes}
and one of {Air, Earth, Fire, Ice, Poison}.
Iashol Sacrifice: Health

This sacrifice offers one of -3 EV, -3 AC, or -10% HP.

This commit is meant to include all foundational changes for Iashol.
Iashol sacrifice: Essence

This sacrifice offers one of -20 MR, -10% MP, or a wizardry penalty.
Iashol sacrifice: purity

This sacrifice got deleted somehow, and is now re-added. It offers one
of deformed body, deteriorating, slow healing, or screaming. It can also
offer clumsy/weak/dopey for a smaller amount of piety.
Make =tele grant evoke teleportation (#8688)

Because of a misplaced parenthesis, ring of protection or ring or regen
was granting the ability instead, depending on whether you have "cannot
use devices".
Iashol words/taste poison interaction

Exempting poison damage from the check to apply -scrolls/-potions status
Don't trigger MUT_NO_{READ,DRINK} on every HP loss.

This was never intended.
Adding back in support for essence and sanity sacrifices