Merge
diff --git a/.hgtags b/.hgtags
index 8432c2f..2bbafd6 100644
--- a/.hgtags
+++ b/.hgtags
@@ -142,3 +142,4 @@
 885050364691ac1ac978305c63f3368a197fb04d jdk8-b18
 0ff7113a0882ec82d642cb9f0297b4e497807ced jdk8-b19
 6561530ea757c3f3a6fb171c9cc7b3885cdeca85 jdk8-b20
+b3a426170188f52981cf4573a2f14d487fddab0d jdk8-b21