move ActionBarSherlock lib, add gradle build files

OpenPGP-Keychain/build.gradle

@@ -0,0 +1,63 @@
+buildscript {
+    repositories {
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:0.4'
+    }
+}
+
+apply plugin: 'android'
+
+dependencies {
+    compile fileTree(dir: 'libs', includes: ['*.jar'], excludes: ['android-support-v4.jar'])
+    compile project(':libraries:ActionBarSherlock')
+}
+
+android {
+    compileSdkVersion 17
+    buildToolsVersion "17"
+
+    defaultConfig {
+        minSdkVersion 8
+        targetSdkVersion 17
+    }
+
+    sourceSets {
+        main {
+            manifest.srcFile 'AndroidManifest.xml'
+            java.srcDirs = ['src']
+            resources.srcDirs = ['src']
+            aidl.srcDirs = ['src']
+            renderscript.srcDirs = ['src']
+            res.srcDirs = ['res']
+            assets.srcDirs = ['assets']
+        }
+
+        instrumentTest.setRoot('tests')
+    }
+
+    /*
+     * To sign release build, create file gradle.properties in .gradle/ with this content:
+     *
+     * signingStoreLocation=/home/key.store
+     * signingStorePassword=xxx
+     * signingKeyAlias=alias
+     * signingKeyPassword=xxx
+     */
+    signingConfigs {
+        myConfig {
+            storeFile file(signingStoreLocation)
+            storePassword signingStorePassword
+            keyAlias signingKeyAlias
+            keyPassword signingKeyPassword
+        }
+    }
+
+    buildTypes {
+        release {
+            signingConfig signingConfigs.myConfig
+        }
+    }
+}