* Fix Runtime in atoms_movable.dm,597: list index out of bounds
* Fix Runtime in floor_attackby.dm,118: Cannot execute 0.is crowbar().
* Fix null values being present in mob_list.
* Another fix for Runtime in update_icons.dm,254: Cannot execute null.GetUIState().
- This time lets just ensure dna is instantiated no matter who is calling dress_preview_mob().
* Fix Runtime in suit_storage_unit.dm,792: Cannot execute null.set machine().
- Also fixed other mixups of usr vs. user that I found in the same file.
* Fixes Runtime in find_spawning.dm,688: Cannot read null.origin_tech
- if this else if block is reached, new_item must not exist, so we obviously can't set origin_tech on it. Examination of the code seems to suggest the original author intended that for any "talking" items to have arcane and precursor tech; since src is now being made talking, src should get the tech.
* Fix talking artifacts downgrading arcane/precursor tech
- Bump up the values by one for talking artifact items instead of overwriting whatever the value was.
092f415375