gold and touchstones

Implement Pat's suggestion of allowing even identified touchstones
to test gold, removing the getobj hack recently added.  This actually
brings the touchstone a bit more in line with the data.base entry.

doc/fixes35.0

@@ -21,6 +21,7 @@ two-weapon combat makes two attacks instead of having one attack hit with
 apply weapon skill to-hit bonus or penalty to bare-handed attacks
 only give monk's "cumbersome armor" message when the armor penalty causes
 	an attack to miss
+identified touchstone can rub on gold like the data.base entry says
 
 
 Platform- and/or Interface-Specific Fixes