patch 9.0.1586: error for using two messages with ngettext() differing in "%"
Problem: Checking translations gives an error for using two messages with
ngettext() that differ in "%" items.
Solution: Adjust the check script to tolerate omitting one "%" item.
diff --git a/src/version.c b/src/version.c
index 27e558a..fdb7716 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
+ 1586,
+/**/
1585,
/**/
1584,