Initial commit of navigation controller

Initial structure of the navigation controller and XML based
navigation graph.

Test: navigation/integration-tests/testapp compiles and runs

Change-Id: I08023947b7c510cd9704bda42edefe1c50cc8430

diff --git a/navigation/runtime/build.gradle b/navigation/runtime/build.gradle
new file mode 100644
index 0000000..34c8638
--- /dev/null
+++ b/navigation/runtime/build.gradle

@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import com.android.builder.core.BuilderConstants
+apply plugin: 'com.android.library'
+apply plugin: 'maven'
+
+android {
+    compileSdkVersion tools.current_sdk
+    buildToolsVersion tools.build_tools_version
+
+    defaultConfig {
+        minSdkVersion flatfoot.min_sdk
+        targetSdkVersion tools.current_sdk
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+
+    testOptions {
+        unitTests.returnDefaultValues = true
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_7
+        targetCompatibility JavaVersion.VERSION_1_7
+    }
+}
+
+dependencies {
+    compile libs.support.core_utils
+    compile libs.support.fragments
+
+    testCompile libs.junit
+    testCompile libs.mockito.all
+    testCompile(libs.test_runner) {
+        exclude module: 'support-annotations'
+    }
+    androidTestCompile(libs.espresso_core, {
+        exclude group: 'com.android.support', module: 'support-annotations'
+    })
+}
+
+uploadArchives {
+    repositories {
+        mavenDeployer {
+            repository(url: rootProject.ext.localMavenRepo)
+            pom.artifactId = "runtime"
+        }
+    }
+}
+
+android.libraryVariants.all { variant ->
+    def name = variant.buildType.name
+    def suffix = name.capitalize()
+    def jarTask = project.tasks.create(name: "jar${suffix}", type: Jar){
+        dependsOn variant.javaCompile
+        from variant.javaCompile.destinationDir
+        destinationDir new File(project.buildDir, "libJar")
+    }
+}