patch 8.0.0920: cursor wrong after switching altscreen in terminal

Problem:    The cursor shape is wrong after switch back from an alternate
            screen in a terminal window. (arius Gedminas)
Solution:   Change bitfield to unsigned.  Set flag that cursor shape was set.
diff --git a/src/version.c b/src/version.c
index fa404b6..3758ab9 100644
--- a/src/version.c
+++ b/src/version.c
@@ -770,6 +770,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    920,
+/**/
     919,
 /**/
     918,