Merge branch 'stable-2.5' into stable-2.6 * stable-2.5: Release notes for 2.5.4 Require preferred email to be a verified address Corrections in the 2.5.x release notes Conflicts: ReleaseNotes/ReleaseNotes-2.5.2.txt gerrit-httpd/src/main/java/com/google/gerrit/httpd/rpc/account/AccountSecurityImpl.java Change-Id: I08731949f0e7a87604ca003b81e6dbe63678bd82