Correction: The "release" setting had got lost in the RPM spec file.

support-files/mysql.spec.sh

@@ -118,6 +118,8 @@
 %define NORMAL_TEST_MODE test-bt
 %define DEBUG_TEST_MODE test-bt-debug
 
+%define release 1.glibc23
+
 %define mysql_license GPL
 %define src_dir mysql-%{mysql_version}