add mail_notify method

src/eo/Utils.groovy

@@ -7,4 +7,24 @@ def publish_cobertura_report(report_pattern) {
           maxNumberOfBuilds: 0, onlyStable: false, sourceEncoding: 'ASCII', zoomCoverageChart: false])
 }
 
+
+def mail_notify(currentBuild, env, email) {
+    /* Send mail to 'email' if branch is master
+     else send mail to the author of last commit
+     */
+    if (currentBuild.result == null) {
+        // Hack to have the 'jenkins build back to normal' mail sent
+        currentBuild.result = 'SUCCESS'
+    }
+    if (env.BRANCH_NAME == 'master') {
+        step([$class: 'Mailer', notifyEveryUnstableBuild: true,
+              recipients: email, sendToIndividuals: true])
+    } else {
+        step([$class: 'Mailer',
+              notifyEveryUnstableBuild: true,
+              recipients: emailextrecipients([[$class: 'CulpritsRecipientProvider'],
+                                              [$class: 'RequesterRecipientProvider']])])
+    }
+}
+
 return this