Update wyrm-saver to current codebase.  Still can't dig out of the rock.
New tag in progress.
Tunes up mine pedestal finale

This adds some sark wyrms and noise to the initial sinkage, as well as making the eye emit Disturbing Screams so they can find you more easily.

More to the point, the wyrms can now dig just fine thanks to a new critter tag, MF_BORES, which gives 15x the bash ability a critter which BORES would typically have.  If a wyrm somehow got to the surface, it wou wreck any fortifications you had, because it's pretty good at tunneling throug solid rock.

(Until the sun came up, at which point it'd be Screwed.)

Fixes #10058.
Removes non-needed translation, thanks BevapDin.
Merge pull request #10424 from KA101/wyrm2

Tunes up mine pedestal finale