As suggested in a message from <Someone>, add a rumor and an oracle
regarding priestly donations. Keni's suggested wording was incorporated.
A spelling error in another oracle is also fixed.
As From a bug report.
- tengu is plural, some true rumors spelled it "tengus"
- Caveman quest messages shouldn't contain the word "human" since not all
cavemen are human, changed such messages in various ways
- fix a typo in a Wizard quest message
