#1499 Replace indices in function calls with pointers

[artes-liberales]

#1499 Replace indices in function calls with pointers

Some instances of r_idx are now replaced with pointers.
All of these were in functions working with monster recall.

Also a bug was fixed in the function wipe_monster_lore,
that made it impossible to wipe lore for all monsters.
This wizard command 'W' does not seem to be documented
in the help file.

This is only a partial solution of the ticket. The
remaining r_idx and other indices may still need cleanup.

Changes in:
mon-lore.h
mon-lore.c

In the functions:
cheat_monster_lore (Wizard command r)
wipe_monster_lore (Wizard command W)
describe_monster (Outputs the monster recall)
roff_top (Display one line with the name and ch of the monster)
screen_roff (Recall on the screen)
display_roff (Recall in term window)

Also secondary changes in:
wizard.c (Wizard commands r, W)
xtra3.c (Recall in subwindow)
cmd3.c (One line desc. at the recall command '/')
target.c (Recall when targeting)
ui-knowledge.c (Recall in list after player knowledge command ~)
wiz-spoil.c (Create spoil files)

No changes in:
mon-util.c
In the functions:
summon_specific_ok
What's the header file? The function does not seem to be in use.
I did not understand the function, so I didn't dare to change it.

No changes in:
cave.h
cave.c
In:
monster_race_track

No changes in mon-make.c, generate.c, spells1.c, wizard.c,
because r_idx is used inside the functions

[magnate]

merged with thanks