Merge
diff --git a/.hgtags b/.hgtags
index 677d1c9..898c53b 100644
--- a/.hgtags
+++ b/.hgtags
@@ -1,3 +1,4 @@
+77a6dd86ef0546b3c439e268f31a044459cfc79d jdk8u20-b21
 d107468094209ee24fd86e2ef23255be8b087c78 jdk8u20-b20
 582979c2039fc1b90f3395bae5466a58d511f69a jdk8u40-b00
 3e9612aa7bc322b2ad3a167eb446919edb94c759 jdk8u20-b19