Add a Jenkins pipeline config to test ZNC on FreeBSD

Jenkinsfile

@@ -0,0 +1,47 @@
+#!groovy
+
+node('freebsd') {
+  // freebsd 10.3 + pkg install git openjdk cmake icu pkgconf swig30 python3
+  timestamps {
+    update_github_status()
+    try {
+      timeout(time: 30, unit: 'MINUTES') {
+        def srcdir = pwd()
+        def tmpdir = pwd([tmp: true])
+        stage('Checkout') {
+          sh 'env'
+          checkout scm
+          sh 'git submodule update --init --recursive'
+        }
+        stage('Build') {
+          dir("$tmpdir/build") {
+            sh "cmake $srcdir -DWANT_PERL=ON -DWANT_PYTHON=ON -DCMAKE_INSTALL_PREFIX=$tmpdir/install-prefix"
+            sh 'make VERBOSE=1 all'
+          }
+        }
+        stage('Unit test') {
+          dir("$tmpdir/build") {
+            sh 'make unittest'
+          }
+        }
+        stage('Integration test') {
+          dir("$tmpdir/build") {
+            sh 'make install'
+            // TODO: run make inttest
+          }
+        }
+      }
+      currentBuild.result = 'SUCCESS'
+    } catch (err) {
+      echo "Error: ${err}"
+      currentBuild.result = 'FAILURE'
+    }
+    update_github_status()
+  }
+}
+
+def update_github_status() {
+  step([$class: 'GitHubCommitStatusSetter',
+        contextSource: [$class: 'ManuallyEnteredCommitContextSource',
+                        context: 'continuous-integration/jenkins']])
+}