code change - oextra

code change - oextra

move oattached and oname and other things that vary
the size of the obj structure into a separate
non-adjacent oextra structure, similar to what has
already been done for mextra. The obj structure
itself becomes a fixed size.

New macros:

#define ONAME(o)	((o)->oextra->oname)
#define OMID(o)		((o)->oextra->omid)
#define OMONST(o)	((o)->oextra->omonst)
#define OLONG(o)	((o)->oextra->olong)
#define OMAILCMD(o)	((o)->oextra->omailcmd)

#define has_oname(o)	((o)->oextra && ONAME(o))
#define has_omid(o)	((o)->oextra && OMID(o))
#define has_omonst(o)	((o)->oextra && OMONST(o))
#define has_olong(o)	((o)->oextra && OLONG(o))
#define has_omailcmd(o)	((o)->oextra && OMAILCMD(o))

changed macros:
has_name(mon) becomes has_mname(mon)  to correspond.

The CVS repository was tagged with
	NETHACK_PRE_OEXTRA
before commiting these, and
tagged with
	NETHACK_POST_OEXTRA
immediately after. The diff
between those two tags is this oextra patch.

The associated mail daemon changes to use an oextra
structure instead of a hidden command located in the
name after the terminating NUL, have not been tried
or tested.