Blood Inheritance Fix

A typo prevented the application of weaponatts (#what -> #oItem).

Furthermore, the application of permanent unholy damage failed for no
discernible reason a huge percentage of the time. I simply replaced this
bad outcome with 'cursed' weapons instead, which are equally useless.

I also made the spell not work on ranged weapons (now that mods on
ranged weapons function). Then, I fixed typos that sent incorrect text
messages in various circumstances.