<email deleted> reported back on 8/31/06 that elven weapons were not
affected when he poked a fire elemental with them. This is true, but
moreover, there was no code to have passive fire to affect attackers.
Now erode_obj() supports all the same damage types as rust_dmg(), and added
the connecting code to allow passive fire attacks do something.
There probably should be macros for the damage types used by rust_dmg
and erode_obj, and possibly these functions should be combined, but they
are slightly different and dealing with that requires more thought.
a5640e4bc8