Allow for reproducible builds

REPRODUCIBLE_BUILD=1 ./gradlew clean :build

gradle/reprod/patches/mixingradle/0002-Remove-all-buildscript-dependencies.patch

@@ -0,0 +1,125 @@
+From f1130f071e67235b27e2bca95584dec25a8dec37 Mon Sep 17 00:00:00 2001
+From: Jonas Herzig <me@johni0702.de>
+Date: Mon, 7 Aug 2017 20:04:56 +0200
+Subject: [PATCH 2/3] Remove all buildscript dependencies
+
+---
+ build.gradle | 91 ------------------------------------------------------------
+ 1 file changed, 91 deletions(-)
+
+diff --git a/build.gradle b/build.gradle
+index c34a8a2..40169df 100644
+--- a/build.gradle
++++ b/build.gradle
+@@ -1,22 +1,6 @@
+-buildscript {
+-    repositories {
+-        maven {
+-            url "https://plugins.gradle.org/m2/"
+-        }
+-    }
+-    dependencies {
+-        classpath 'nl.javadude.gradle.plugins:license-gradle-plugin:0.11.0'
+-        classpath "com.gradle.publish:plugin-publish-plugin:0.9.1"
+-    }
+-}
+-
+ apply plugin: 'groovy'
+-apply plugin: 'license'
+ apply plugin: 'maven'
+ apply plugin: 'eclipse'
+-apply plugin: "com.gradle.plugin-publish"
+-
+-defaultTasks 'licenseFormat', 'build'
+ 
+ group = 'org.spongepowered'
+ version = '0.4-SNAPSHOT'
+@@ -43,22 +27,6 @@ processResources {
+    from 'LICENSE.txt'
+ }
+ 
+-license {
+-    ext {
+-        name = project.name
+-        organization = project.organization
+-        url = project.url
+-    }
+-    include '**/*.groovy'
+-    header file("HEADER.txt")
+-    sourceSets = project.sourceSets
+-    ignoreFailures false
+-    strictCheck true
+-    mapping {
+-        java = 'SLASHSTAR_STYLE'
+-    }
+-}
+-
+ jar.manifest.mainAttributes (
+     "Built-By": System.properties['user.name'],
+     "Created-By": System.properties['java.vm.version'] + " (" + System.properties['java.vm.vendor'] + ")",
+@@ -81,62 +49,3 @@ artifacts {
+     archives groovydocJar
+ }
+ 
+-pluginBundle {
+-    website = 'http://www.gradle.org/'
+-    vcsUrl = 'https://github.com/SpongePowered/MixinGradle'
+-    description = 'Gradle plugin for SpongePowered Mixin'
+-    tags = ['spongepowered', 'sponge', 'mixin']
+-    plugins {
+-        patcher {
+-            id = 'org.spongepowered.mixin'
+-            displayName = 'SpongePowered Mixin Gradle Plugin'
+-        }
+-    }
+-}
+-
+-uploadArchives {
+-    repositories {
+-
+-        mavenDeployer {
+-            configuration = configurations.deployerJars
+-
+-            if (project.hasProperty("chRepo"))
+-            {
+-                repository(url: project.chRepo) {
+-                    authentication(userName: project.chUsername, password: project.chPassword)
+-                }
+-            }
+-
+-            pom {
+-                groupId = project.group
+-                version = project.version
+-                artifactId = project.archivesBaseName
+-                project {
+-                    name project.archivesBaseName
+-                    packaging 'jar'
+-                    description 'MixinGradle'
+-                    url 'http://www.spongepowered.org/'
+-
+-                    scm {
+-                        url 'https://github.com/SpongePowered/Mixin'
+-                        connection 'scm:git:git://github.com/SpongePowered/Mixin.git'
+-                        developerConnection 'scm:git:git@github.com:SpongePowered/Mixin.git'
+-                    }
+-
+-                    issueManagement {
+-                        system 'GitHub Issues'
+-                        url 'https://github.com/SpongePowered/MixinGradle/issues'
+-                    }
+-
+-                    licenses {
+-                        license {
+-                            name 'MIT license'
+-                            url 'http://opensource.org/licenses/MIT'
+-                            distribution 'repo'
+-                        }
+-                    }
+-                }
+-            }
+-        }
+-    }
+-}
+-- 
+2.5.5
+