Reordering "killed for the first time" and "hit with a wielded weapon
for the first time" was done by moving the latter to hmon(). Hitting
with an applied polearm also gave the first-hit message since it
bypassed the routine that had been doing so. But the throwing code
that handles applied polearms calls hmon() for damage, so after that
reordering, the first-hit log message became duplicated if triggered
by polearm usage.
Also, fix a quibble with the wizard mode conduct message given after
never-hit-with-wielded-weapon conduct has been broken. The message
said "used a wielded weapon N times" when it meant "hit with a wielded
weapon N times". "Used" is misleading if that wielded weapon happens
to be a pick-axe, so change the message to say "hit with".
e972d0b965