Update merge info

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc8.0.x/trunk@1833814 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/MERGE.txt b/MERGE.txt
index 55352f2..9dd757f 100644
--- a/MERGE.txt
+++ b/MERGE.txt
@@ -75,4 +75,4 @@
 Sub-tree
 src/main/java/org/apache/commons/pool2
 The SHA1 ID for the most recent commit to be merged to Tomcat is:
-191a391166a8565718ef685531afa3fa44afd69c
+dfef97be70e8b1c3edb44b972fc7f700f3fe6255