Set the release date for 2.7.7-RC0

Signed-off-by: Steve Loughran <stevel@hortonworks.com>
diff --git a/hadoop-common-project/hadoop-common/CHANGES.txt b/hadoop-common-project/hadoop-common/CHANGES.txt
index 72678f9..117c99f 100644
--- a/hadoop-common-project/hadoop-common/CHANGES.txt
+++ b/hadoop-common-project/hadoop-common/CHANGES.txt
@@ -1,6 +1,6 @@
 Hadoop Change Log
 
-Release 2.7.7 - UNRELEASED
+Release 2.7.7 - 2018-06-05
 
   INCOMPATIBLE CHANGES
 
diff --git a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
index 8abe0a2..9e442e6 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
+++ b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
@@ -1,6 +1,6 @@
 Hadoop HDFS Change Log
 
-Release 2.7.7 - UNRELEASED
+Release 2.7.7 - 2018-06-05
 
   INCOMPATIBLE CHANGES
 
diff --git a/hadoop-mapreduce-project/CHANGES.txt b/hadoop-mapreduce-project/CHANGES.txt
index 42c87cc..34d0348 100644
--- a/hadoop-mapreduce-project/CHANGES.txt
+++ b/hadoop-mapreduce-project/CHANGES.txt
@@ -1,6 +1,6 @@
 Hadoop MapReduce Change Log
 
-Release 2.7.7 - UNRELEASED
+Release 2.7.7 - 2018-06-05
 
   INCOMPATIBLE CHANGES
 
diff --git a/hadoop-yarn-project/CHANGES.txt b/hadoop-yarn-project/CHANGES.txt
index 7f1030c..7a72ba0 100644
--- a/hadoop-yarn-project/CHANGES.txt
+++ b/hadoop-yarn-project/CHANGES.txt
@@ -1,6 +1,6 @@
 Hadoop YARN Change Log
 
-Release 2.7.7 - UNRELEASED
+Release 2.7.7 - 2018-06-05
 
   INCOMPATIBLE CHANGES