Speed up build: Upgrade to Gradle Android Plugin 0.10.0, Disable Lint

OpenKeychain/build.gradle

@@ -80,9 +80,12 @@ android {
         buildTypes.release.signingConfig = null
     }
     
-    // Do not abort build if lint finds errors
+    // NOTE: Lint is disabled because it slows down builds,
+    // to enable it comment out the code at the bottom of this build.gradle
     lintOptions {
+        // Do not abort build if lint finds errors
         abortOnError false
+
         checkAllWarnings true
         htmlReport true
         htmlOutput file("lint-report.html")
@@ -103,4 +106,12 @@ task localTest(type: Test, dependsOn: assemble) {
     classpath = sourceSets.testLocal.runtimeClasspath
 }
 
+// NOTE: This disables Lint!
+tasks.whenTaskAdded { task ->
+    if (task.name.equals("lint")) {
+        task.enabled = false
+    }
+}
+
+// NOTE: tests disabled!
 //check.dependsOn localTest