Change to externs to build on Darwin

x11/pdcx11.c

@@ -24,6 +24,8 @@
 #if defined(XCURSES)
 #include "pdcx11.h"
 
+AppData app_data;
+
 #if NeedWidePrototypes
 # define PDC_SCROLLBAR_TYPE double
 #else

x11/pdcx11.h

@@ -239,7 +239,6 @@ typedef struct
  XtWidgetGeometry geometry;
 #endif
 } AppData;
-AppData app_data;
 
 #define XCURSESNORMALFONTINFO   app_data.normalfont
 #define XCURSESITALICFONTINFO   app_data.italicfont

x11/process/x11.c

@@ -22,6 +22,7 @@
 */
 
 #include "pdcx11.h"
+extern AppData app_data;
 
 int visible_cursor=0;
 int windowEntered = 1;

x11/process/x11curses.c

@@ -27,6 +27,7 @@
  */
 
 #include "pdcx11.h"
+extern AppData app_data;
 
 #ifdef PROTO
 static void XCursesExitCursesProcess(int, char *);