Minimal patches to make uemacs compile in a modern environment.

make sure to include <errno.h>, and allow for the fact that newer
gcc's don't allow function declarations in function scope (don't
ask me why, but there you have it..)

display.c

@@ -8,6 +8,7 @@
  *	modified by Petri Kutvonen
  */
 
+#include	<errno.h>
 #include        <stdio.h>
 #include	"estruct.h"
 #include        "edef.h"

main.c

@@ -82,6 +82,10 @@ extern unsigned _stklen = 32766;
 
 #if	UNIX
 #include <signal.h>
+static void emergencyexit();
+#ifdef SIGWINCH
+        extern void sizesignal();
+#endif
 #endif
 
 #if	CALLED
@@ -122,13 +126,6 @@ char *argv[];	/* argument strings */
 	int (*execfunc)();		/* ptr to function to execute */
 #endif
 
-#if UNIX
-	static void emergencyexit();
-#ifdef SIGWINCH
-	extern void sizesignal();
-#endif
-#endif
-
 #if	PKCODE & VMS
 	(void) umask(-1);	/* use old protection (this is at wrong place) */
 #endif