Fix rings

[takkaria]

Stats:

• 32 now
• 5 of which are unmitigated crap

Todo:

• =Sustain -> bodykeeping (str/dex/con), soulkeeping (int/wis/chr)
• all purely-negative rings can be nuked. (cursed normal ones are ok)
• rings of flame/acid/ice/elec all basically junk, since they only give rbase and poor activation. (=res rings) if they gave weapon brand, that'd be interesting.
• ring aggravation -> ring of fury(?) (+= res_fear)
• rename =rConf => of Clarity

[Sean]

- rings of flame/acid/ice/elec all basically junk, since they only give rbase and poor activation. (=res rings) if they gave weapon brand, that'd be interesting.

Replacing all =oResistOneThing with the equivalent =oFlame would be interesting. Several quickly moving characters of mine have replaced =oResistOneThing with the corresponding =oFlame.

[takkaria]

Done in r907.