Addresses issue #1474. I also created PR #1475 last month which handled this by adding a new paranoid_confirm option, although copperwater pointed out some concerns which have been implemented here.

This PR disables fuzzy string searching for scrolls of genocide. For uncursed/cursed scrolls, strings like master mnd flayer (which would eliminate monks) are no longer accepted because the monster name isn't the entire string. For blessed scrolls, strings like master mind flayer are no longer accepted because the monster name isn't a single letter or full class description.

I changed the message "This [symbol/response] does not represent any monster" to "This [symbol/response] does not represent any monster class" because after this change it felt strange to have a response like master mind flayer, which directly represents a monster, not represent a monster.