Add Gradle build support for Lambda HOL

LambdaLab/build.gradle

@@ -0,0 +1,46 @@
+apply plugin:'java-base'
+apply plugin:'idea'
+apply plugin:'eclipse'
+
+sourceSets {
+    exercises {
+        java.srcDirs = ['test/exercises']
+    }
+    solutions {
+        java.srcDirs = ['test/solutions']
+    }
+}
+
+configurations {
+    testCompile
+    exercisesCompile.extendsFrom testCompile
+    solutionsCompile.extendsFrom testCompile
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    testCompile 'junit:junit:4.12'
+}
+
+task testExercises(type:Test){
+    classpath = sourceSets.exercises.runtimeClasspath
+    testClassesDir = sourceSets.exercises.output.classesDir
+}
+
+task testSolutions(type:Test){
+    classpath = sourceSets.solutions.runtimeClasspath
+    testClassesDir = sourceSets.solutions.output.classesDir
+}
+
+tasks.withType(Test){
+    testLogging {
+        // set options for log level LIFECYCLE
+        events "started", "passed", "skipped", "failed" 
+        exceptionFormat "short"
+    }
+}
+
+check.dependsOn testExercises, testSolutions

LambdaLab/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Wed Aug 03 17:34:33 EEST 2016
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-bin.zip