patch 8.0.1490: number of spell regions is spread out through the code

Problem:    Number of spell regions is spread out through the code.
Solution:   Define MAXREGIONS.
diff --git a/src/version.c b/src/version.c
index ccc1066..0a54751 100644
--- a/src/version.c
+++ b/src/version.c
@@ -772,6 +772,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1490,
+/**/
     1489,
 /**/
     1488,