Allow potions thrown straight down while hero is mounted to target
steed instead of always hitting the floor. There's already a fixes35.0
entry for potions hitting worn saddle instead of the creature wearing it,
but that only happened when thrown at a nearby saddled monster, not when
the hero was stuck mounted on a steed with cursed saddle.
Eight separate "the <obj> glows <color>" messages were too many...
(four for dipping an item in holy/unholy water, four more for throwing
either of those potions at a saddled monster). Replace the repetitive
code, leaving just two such messages. Setting of bknown flag for the
dipped object is the only intentional change here. That used to be done
unconditionally but now requires that the hero see the glow color.
e6b2d5c33d