curses follow-up bits

Move the curses global variable defininitions to cursmain.c.

Make the references to those global variables extern in
include/wincurs.h

Get rid of a warning:
../win/curses/cursmesg.c:379:9: warning: declaration shadows a
variable in the global scope [-Wshadow] int orig_cursor = curs_set(0);

Kludge for Visual Studio compiler: Add a stub- file for use
in Windows curses port builds to ensure that a needed #pragma
is invoked prior to compiling the file pdcscrn.c in the
PDCurses source distribution. All command line options and
compile of the file. It is unreasonable to expect a NetHack
builder to have to tinker with the PDCurses source files in
order to build NetHack. This kludge means the NetHack builder
doesn't have to.
The file stub-pdcscrn.c contains only two lines:
	#pragma warning(disable : 4996)
	#include "pdcscrn.c"
Some day, if the PDCurses sources corrects the issue, this
can go away.

include/wincurs.h

@@ -7,16 +7,11 @@
 
 /* Global declarations for curses interface */
 
-int term_rows, term_cols; /* size of underlying terminal */
+extern int term_rows, term_cols;   /* size of underlying terminal   */
-
+extern int orig_cursor; 	   /* Preserve initial cursor state */
-WINDOW *base_term;    /* underlying terminal window */
+extern WINDOW *base_term;          /* underlying terminal window    */
-
+extern boolean counting;           /* Count window is active        */
-WINDOW *mapwin, *statuswin, *messagewin;    /* Main windows */
+extern WINDOW *mapwin, *statuswin, *messagewin;    /* Main windows  */
-
-int orig_cursor;	/* Preserve initial cursor state */
-
-boolean counting;   /* Count window is active */
-
 
 #define TEXTCOLOR   /* Allow color */
 #define NHW_END 19

sys/winnt/Makefile.msc

@@ -73,8 +73,8 @@ DEBUGINFO = Y
 #    PDCurses header (.h) files and PDCURSES_C to the location
 #    of your PDCurses C files.
 #
-#ADD_CURSES=Y
+ADD_CURSES=Y
-#PDCURSES_TOP=..\..\pdcurses
+PDCURSES_TOP=..\..\pdcurses
 #
 #==============================================================================
 # This marks the end of the BUILD DECISIONS section.
@@ -399,7 +399,7 @@ PDCLIBOBJS = $(O)addch.o $(O)addchstr.o $(O)addstr.o $(O)attr.o $(O)beep.o
 PDCOBJS = $(O)pdcclip.o $(O)pdcdisp.o $(O)pdcgetsc.o $(O)pdckbd.o $(O)pdcscrn.o \
 	  $(O)pdcsetsc.o $(O)pdcutil.o
 
-PDCLIB = $(O)\pdcurses.lib
+PDCLIB = $(O)pdcurses.lib
 
 PDCINCL = /I$(PDCURSES_TOP) /I$(PDCSRC) /I$(PDCWINCON)
 
@@ -1257,16 +1257,19 @@ $(O)tile2bmp.o: $(WSHR)\tile2bmp.c $(HACK_H) $(TILE_H) $(MSWSYS)\win32api.h
 $(O)til2bm32.o: $(WSHR)\tile2bmp.c $(HACK_H) $(TILE_H) $(MSWSYS)\win32api.h
 	@$(cc) $(cflagsBuild) -I$(WSHR) /DPACKED_FILE /DTILE_X=32 /DTILE_Y=32 /Fo$@ $(WSHR)\tile2bmp.c
 
-#==========================================
+#===============================================================================
 # PDCurses
-#==========================================
+#===============================================================================
 
-$(O)\pdcurses.lib : $(PDCLIBOBJS) $(PDCOBJS)
+$(O)pdcurses.lib : $(PDCLIBOBJS) $(PDCOBJS)
 	lib -nologo /out:$@ $(PDCLIBOBJS) $(PDCOBJS)
 
-#==========================================
+$(O)pdcscrn.o : $(PDCURSES_HEADERS) $(PDCWINCON)\pdcscrn.c $(MSWSYS)\stub-pdcscrn.c
+	$(cc) $(PDCINCL) $(cflagsBuild) -Fo$@ $(MSWSYS)\stub-pdcscrn.c
+
+#===============================================================================
 # Housekeeping
-#==========================================
+#===============================================================================
 
 spotless: clean
 ! IF ("$(OBJ)"!="")

sys/winnt/stub-pdcscrn.c

@@ -0,0 +1,15 @@
+/*
+ * Use this stub to insert a needed pragma prior
+ * to compiling $(PDCWINCON)\pdcscrn.c in the
+ * PDCurses distribution.
+ *
+ * We don't want to ask NetHack builders to
+ * modify the PDCurses distribution in any way,
+ * we only ask that they have the original intact
+ * PDCurses source tree available during the build.
+ *
+ */
+
+#pragma warning(disable : 4996)
+#include "pdcscrn.c"
+

win/curses/cursmain.c

@@ -80,6 +80,16 @@ struct window_procs curses_procs = {
     genl_can_suspend_yes,
 };
 
+/*
+ * Global variables for curses interface
+ */
+ 
+int term_rows, term_cols;   /* size of underlying terminal */
+int orig_cursor;	    /* Preserve initial cursor state */
+WINDOW *base_term;          /* underlying terminal window */
+boolean counting;           /* Count window is active */
+WINDOW *mapwin, *statuswin, *messagewin;    /* Main windows */
+
 /* Track if we're performing an update to the permanent window.
    Needed since we aren't using the normal menu functions to handle
    the inventory window. */

win/curses/cursmesg.c

@@ -371,12 +371,12 @@ curses_message_win_getline(const char *prompt, char *answer, int buffer)
     char *tmpstr; /* for free() */
     int maxy, maxx; /* linewrap / scroll */
     int ch;
-
     WINDOW *win = curses_get_nhwin(MESSAGE_WIN);
     int border_space = 0;
     int len = 0; /* of answer string */
     boolean border = curses_window_has_border(MESSAGE_WIN);
-    int orig_cursor = curs_set(0);
+
+    orig_cursor = curs_set(0);
 
     curses_get_window_size(MESSAGE_WIN, &height, &width);
     if (border) {