Don't set transform_uncancellable when checking pig form.

You could wind up stuck in your base form and unable to transform
again.

There might be other situations that trigger the same bug.
Fix saves with players stuck in their base form.
Give lava orcs bonuses with orcish launchers.
Remove dead code.
Allow Lava Orcs to worship Beogh.
Turn off heat aura for Lava Orcs of Beogh.
Rename a misleading function.

Except for ghouls, is_player_same_species checked *genus*, not species.
Correct a St Roka line.
Correct a few more related orc speech lines.
Account for LO^Beogh in the changelog.
Manual sync from the wiki (LO^Beogh).
Update a translation whose key changed.
Correct a few comments.
Make trap_god_beogh welcome Lava Orcs.
Remove use of 'you' inside player member functions

'you' seemed to be pointless in such context anyways, and lead to some
const correctness bugs since '*this' could have a different const-ness
from 'you'.
Spell qoala's name correctly (mea maxima culpa).
Recover saves with bad spectral weapons/wellsprings (kilobyte).

MONS_SPECTRAL_WEAPON was inserted before two other enumerators
(0.13-a0-1964-g2fab1c1) and then had a ghost_demon structure added
(0.13-a0-2055-g6cfaa00), both without a tag.  Use the speed to
tell which monster is which; see the comments in unmarshallMonster
for more details.

kilobyte did the first version of the ghost_demon handling, which did
read-ahead to try to guess whether there was actually a ghost_demon
struct in the save.  qoala pointed out that the commit that gave
spectral weapons speed 30 immediately preceded the one that added the
ghost_demon structure (and was pushed at the same time), meaning we can
check use the speed for this, too.
Don't buffer overflow when unmarshalling a negative-length string.

This could happen because of save corruption, or if we tried to
marshall a string bigger than SHORT_MAX.

Also, truncate very long (>= 32K) strings when marshalling, rather than
writing a bad length.
Fix a comment typo.
Don't let elemental wellsprings abjure.

Their casting messages are flavoured as the water rising up and taking
form, which doesn't make sense for abjuration.