Remove the unimplemented macro POINTER_READ().
ia32: Add and use helper function set_frame_addr().
Use ia32_copy_am_attrs().
Factorise code to create a boolean Const.
Use create_zero_const().
Use new_rd_Const_long() instead of new_tarval_from_long() + new_rd_Const().
Remove declaration of non-existent function ir_edgeset_contains().
Remove unused firm_kind entries.
Directly call dump_entity_to_file()/dump_type_to_file() instead of throwing the kind away and calling show_firm_object().

Also remove show_firm_object(), because its only callers are gone now.
Factorise code to get the text of the current debug instruction token.