groovy && java 混编 gradle 配置

参考配置：

apply plugin: "application"
apply plugin: "java"
apply plugin: "groovy"
jar {
    manifest {
        attributes "Main-Class":"com.dalongapp.Application"
    }
}
mainClassName = 'com.dalongapp.Application'
compileJava {
    doFirst {
        compileGroovy
    }
}
dependencies {
    compile gradleApi()
    compile localGroovy()
}