fix #H4237 - color ignored for X11 text map

Color was only being tracked for locations that had the pile of
objects flag set.  And hilite_pile made a monster on a pile take
on the color of the top object of the pile.

This restores the tracking of color for the whole map, and makes
highlighted piles be drawn in inverse like highligted pets.  The
drawing routine doesn't know the difference (but could tell, if
necessary, by testing whether the glyph is an object or a monster).

Also, variables 'inbuf', 'inptr', and 'incount' were global; limit
their scope to winmap.c.

doc/fixes36.1

@@ -179,8 +179,7 @@ X11: enable a scroll bar in menu windows
 X11: support pre-selected entries in menu windows
 X11: make the extended command menu be easier to use and look a little nicer
 X11: make the getline text entry widget display a bigger text entry area
-unix: add CHECK_PLNAME-option to sysconf to make WIZARDS, EXPLORERS, and
-	SHELLERS check player name instead of user's login name
+X11: color didn't work when the map was displayed as text rather than tiles
 
 
 General New Features
@@ -215,6 +214,11 @@ Platform- and/or Interface-Specific New Features
 tty: menu_overlay -option to clear screen and align menus to left
 tty: compile-time option to output escape codes for tile data hints
 unix: compile-time option MSGHANDLER to pass messages to external program
+unix: add CHECK_PLNAME-option to sysconf to make WIZARDS, EXPLORERS, and
+	SHELLERS check player's character name instead of login name
+X11: new NetHack*highlight_prompt resource to control whether the persistent
+	prompt line between the map and message windows for the NetHack*slow
+	configuration will be highlighted when it's expecting input
 
 
 NetHack Community Patches (or Variation) Included