Don't set paralysed ghost ev to 0

That is, if a player died when paralysed, their ghost's EV
probably shouldn't reflect that. (And a few other 0-ev cases.)
Tidy unused fields
Hackily add a message for player ghost brands

Never again will I have to use !log to check if that AK has a
distort weapon.
Don't count randart rCorr as innate (rchandra)

This caused amulets of resist corrosion to be tagged as useless when
the player wears an rCorr randart.
Add autopickup exception for identified "regen (#9037)
Don't break artp tweak prompt on < shortcut.

Escape it properly as "<<".  Also refactor a bit.
Widen artp tweak prompt columns.

Also a few names that were mangled to fit in 5 columns.
Down-underify a couple Ru messages.
Change 'jump' to 'leap' in a few Power Leap messages.
Changing mute status display to remove the word 'permanently'.

Zin recite still inflicts permanent mute status, but the phrasing
works better now that Ru inflicts temporary mute.
Fix ability letter save-compat for jump removal.
Clarify the consequences of decapitation

In Hydra Form.

Bonus: Also reveals a previously semi-secret monster hydra
mechanic! (Healing when their heads are lopped off.)