patch 8.0.1324: some xterm sends different mouse move codes

Problem:    Some xterm sends different mouse move codes.
Solution:   Also accept 0x80 as a move event.

src/term.c

@@ -4980,6 +4980,8 @@ check_termcode(
 		 *	add 0x08 for ALT
 		 *	add 0x10 for CTRL
 		 *	add 0x20 for mouse drag (0x40 is drag with left button)
+		 *	add 0x40 for mouse move (0x80 is move, 0x81 too)
+		 *		 0x43 (drag + release) is also move
 		 *  c == column + ' ' + 1 == column + 33
 		 *  r == row + ' ' + 1 == row + 33
 		 *
@@ -5121,9 +5123,15 @@ check_termcode(
 #   endif
 			)
 		{
-		    /* Keep the mouse_code before it's changed, so that we
-		     * remember that it was a mouse wheel click. */
-		    wheel_code = mouse_code;
+#   if defined(UNIX) && defined(FEAT_MOUSE_TTY)
+		    if (use_xterm_mouse() > 1 && mouse_code >= 0x80)
+			/* mouse-move event, using MOUSE_DRAG works */
+			mouse_code = MOUSE_DRAG;
+		    else
+#   endif
+			/* Keep the mouse_code before it's changed, so that we
+			 * remember that it was a mouse wheel click. */
+			wheel_code = mouse_code;
 		}
 #   ifdef FEAT_MOUSE_XTERM
 		else if (held_button == MOUSE_RELEASE

src/version.c

@@ -771,6 +771,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1324,
 /**/
     1323,
 /**/