Provide a recommended set of format patch args

This provides an even more explicit solution to CadixDevGH-4.

Author: jamierocks

build.gradle

@@ -2,6 +2,7 @@ plugins {
     id 'java-gradle-plugin'
     id 'groovy'
 
+    id 'maven-publish'
     id 'com.gradle.plugin-publish' version '0.9.10'
 
     id 'net.minecrell.licenser' version '0.4.1'
@@ -35,7 +36,7 @@ task groovydocJar(type: Jar, dependsOn: groovydoc) {
 
 gradlePlugin {
     plugins {
-        licenser {
+        gitpatcher {
             id = 'org.cadixdev.gitpatcher'
             implementationClass = 'org.cadixdev.gradle.gitpatcher.GitPatcher'
         }
@@ -49,7 +50,7 @@ pluginBundle {
     tags = ['git']
 
     plugins {
-        licenserPlugin {
+        gitpatcherPlugin {
             id = 'org.cadixdev.gitpatcher'
             displayName = 'gitpatcher'
         }

src/main/groovy/org/cadixdev/gradle/gitpatcher/PatchExtension.groovy

@@ -39,4 +39,12 @@ class PatchExtension {
      */
     String[] formatPatchArgs = ['--no-stat', '-N']
 
+    /**
+     * Applies our recommended additional arguments for Git when formatting
+     * patch files - currently {@code ['--zero-commit', '--full-index', '--no-signature']}.
+     */
+    void recommendedFormatPatchArgs() {
+        formatPatchArgs += ['--zero-commit', '--full-index', '--no-signature']
+    }
+
 }

src/main/groovy/org/cadixdev/gradle/gitpatcher/task/patch/MakePatchesTask.groovy

@@ -25,6 +25,7 @@ package org.cadixdev.gradle.gitpatcher.task.patch
 import static java.lang.System.out
 
 import org.cadixdev.gradle.gitpatcher.Git
+import org.gradle.api.tasks.Input
 import org.gradle.api.tasks.InputDirectory
 import org.gradle.api.tasks.InputFile
 import org.gradle.api.tasks.OutputDirectory
@@ -34,6 +35,7 @@ class MakePatchesTask extends PatchTask {
 
     private static final Closure HUNK = { it.startsWith('@@') }
 
+    @Input
     String[] formatPatchArgs
 
     @Override @InputDirectory
@@ -74,7 +76,7 @@ class MakePatchesTask extends PatchTask {
         }
 
         def git = new Git(repo)
-        git.format_patch(formatPatchArgs + ['-o', patchDir.absolutePath, 'origin/upstream']) >> null
+        git.format_patch(*formatPatchArgs, '-o', patchDir.absolutePath, 'origin/upstream') >> null
 
         git.repo = root
         git.add('-A', patchDir.absolutePath) >> out