Add Jenkinsfile that i hope is good enough

Jenkinsfile

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+pipeline {
+  agent any
+  stages {
+    stage('Clean Up') {
+      steps {
+        sh '''cd xybrid
+make clean || true
+rm Makefile'''
+      }
+    }
+    stage('qbuild') {
+      steps {
+        sh 'qbuild'
+      }
+    }
+    stage('Make') {
+	sh 'make'
+    }
+  }
+}