makeknown()

Noticed while investigating the report about sortloot interacting
with persistent inventory window when identifying all of invent and
possibly skipping some items.  [This doesn't fix that.]

End of game disclosure was using makeknown() on inventory.  It is a
jacket around discover_object() which passes the flag to exercise
Wisdom.  That's useless at end of game [now; conceivably wrong if
disclosure of characteristics exercise ever got added], so call
discover_object() directly to suppress exercise of Wisdom.

discover_object() was also calling update_inventory() for every item
being discovered.  That's not useful when looping through inventory
at end of game.

doc/fixes36.2

@@ -30,6 +30,8 @@ using 'O' to set up a hilite_status rule for string comparison, the menu for
 when finishing using 'O' to examine or set hilite_status rules, if the
 	'statushilites' option is 0 and there is at least one rule, give a
 	reminder about setting it to non-zero to activate highlighting
+end of game disclosure was exercising Wisdom when revealing inventory and
+	also repeatedly updating persistent inventory window if enabled
 
 
 Fixes to Post-3.6.1 Problems that Were Exposed Via git Repository