updated for version 7.3.866

Problem:    Not serving the X selection during system() isn't nice.
Solution:   When using fork() do not loose the selection, keep serving it.
            Add a loop similar to handling I/O. (Yukihiro Nakadaira)

src/version.c

@@ -728,6 +728,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    866,
 /**/
     865,
 /**/