Use single define for max message history

... instead of having every windowport define their own variant.
Affects tty, curses, X11, and Windows GUI.

include/global.h

@@ -441,6 +441,10 @@ extern struct nomakedefs_s nomakedefs;
 #define MAXMONNO 120 /* extinct monst after this number created */
 #define MHPMAX 500   /* maximum monster hp */
 
+#ifndef MAX_MSG_HISTORY
+#define MAX_MSG_HISTORY 128 /* max # of lines in msg_history */
+#endif
+
 typedef struct color_and_attr {
            int color, attr;
 } color_attr;

include/winX.h

@@ -267,7 +267,6 @@ struct xwindow {
                           /* event into a character(s)             */
 
 #define DEFAULT_LINES_DISPLAYED 12 /* # of lines displayed message window */
-#define MAX_HISTORY 60             /* max history saved on message window */
 
 /* flags for X11_yn_function_core() */
 #define YN_NORMAL     0U /* no flags */

include/wincurs.h

@@ -33,7 +33,6 @@ extern WINDOW *activemenu;         /* curses window for menu requesting a
 #define MAP_WIN     3
 #define INV_WIN     4
 #define NHWIN_MAX   5
-#define MESG_HISTORY_MAX   200
 #if !defined(__APPLE__) || !defined(NCURSES_VERSION)
 # define USE_DARKGRAY /* Allow "bright" black; delete if not visible */
 #endif  /* !__APPLE__ && !PDCURSES */