Polish quote styles in gradle files

Replace singe quote-marks with double quote-marks when possible for a
more consistent style.

gradle/jdiff.gradle

@@ -11,14 +11,14 @@
  * @param OLD_VERSION_ROOT required, typically pointing to a separate git clone dir
  */
 task jdiff {
-	description = 'Generates a JDiff report'
-	group = 'Documentation'
+	description = "Generates a JDiff report"
+	group = "Documentation"
 
 	def jdiffHome = "${rootProject.rootDir}/gradle/jdiff"
 
 	ant.taskdef(
-			name: 'jdiff',
-			classname: 'jdiff.JDiffAntTask',
+			name: "jdiff",
+			classname: "jdiff.JDiffAntTask",
 			classpath: "${jdiffHome}/antjdiff.jar")
 
 	def previousVersion = rootProject.previousVersion
@@ -38,13 +38,13 @@ task jdiff {
 
 		oldVersionRoot = new File(oldVersionRoot)
 
-		ant.property(name: 'JDIFF_HOME', value: jdiffHome)
+		ant.property(name: "JDIFF_HOME", value: jdiffHome)
 		ant.mkdir(dir: outputDir)
 		ant.jdiff(
 				destdir: outputDir,
-				verbose: 'off',
-				stats: 'on',
-				docchanges: 'on') {
+				verbose: "off",
+				stats: "on",
+				docchanges: "on") {
 			old(name: "Spring Framework ${oldVersion}") {
 				oldVersionRoot.eachDirMatch( {
 						def candidate = new File(it)
@@ -52,19 +52,19 @@ task jdiff {
 						candidate.name.matches("spring-.*") }) { match ->
 					match.eachDirRecurse { subdir ->
 						if (subdir.path ==~ '.*/src/main/java$') {
-							dirset(dir: subdir.path, includes: 'org/**')
+							dirset(dir: subdir.path, includes: "org/**")
 						}
 					}
 				}
 			}
-			'new'(name: "Spring Framework ${currentVersion}") {
+			"new"(name: "Spring Framework ${currentVersion}") {
 				currentVersionRoot.eachDirMatch( {
 						def candidate = new File(it)
 						candidate.name.matches("org.springframework.*") ||
 						candidate.name.matches("spring-.*") }) { match ->
 					match.eachDirRecurse { subdir ->
 						if (subdir.path ==~ '.*/src/main/java$') {
-							dirset(dir: subdir.path, includes: 'org/**')
+							dirset(dir: subdir.path, includes: "org/**")
 						}
 					}
 				}

gradle/merge-artifacts.gradle

@@ -1,6 +1,6 @@
 /**
  * Will merge the artifacts of the current project into mergeIntoProject. For example, to
- * bundle spring-test-mvc in spring-test's jars. This script will perform the following
+ * bundle spring-test-mvc in spring-test"s jars. This script will perform the following
  * steps:
  *
  * - Ensure that jar tasks of the project being merged from will execute the tasks of the
@@ -13,14 +13,14 @@
  *
  * Example Usage:
  *
- *   ext.mergeIntoProject = project(':spring-test')
+ *   ext.mergeIntoProject = project(":spring-test")
  *   apply from: "${rootProject.projectDir}/gradle/merge-artifacts.gradle"
  */
 
 def mergeFromProject = project
 
 // invoking a task on mergeFromProject will invoke the task with the same name on mergeIntoProject
-def taskNamesToMerge = ['sourcesJar','jar','javadocJar','javadoc','install','artifactoryPublish']
+def taskNamesToMerge = ["sourcesJar","jar","javadocJar","javadoc","install","artifactoryPublish"]
 taskNamesToMerge.each { taskName ->
 	def taskToRemove = mergeFromProject.tasks.findByPath(taskName)
 	if(taskToRemove) {

gradle/publish-maven.gradle

@@ -1,4 +1,4 @@
-apply plugin: 'maven'
+apply plugin: "maven"
 
 ext.optionalDeps = []
 ext.providedDeps = []
@@ -14,45 +14,45 @@ install {
 
 def customizePom(pom, gradleProject) {
 	pom.whenConfigured { generatedPom ->
-		// respect 'optional' and 'provided' dependencies
+		// respect "optional" and "provided" dependencies
 		gradleProject.optionalDeps.each { dep ->
 			generatedPom.dependencies.findAll { it.artifactId == dep.name }*.optional = true
 		}
 		gradleProject.providedDeps.each { dep ->
-			generatedPom.dependencies.findAll { it.artifactId == dep.name }*.scope = 'provided'
+			generatedPom.dependencies.findAll { it.artifactId == dep.name }*.scope = "provided"
 		}
 
 		// eliminate test-scoped dependencies (no need in maven central poms)
 		generatedPom.dependencies.removeAll { dep ->
-			dep.scope == 'test'
+			dep.scope == "test"
 		}
 
 		// add all items necessary for maven central publication
 		generatedPom.project {
 			name = gradleProject.description
 			description = gradleProject.description
-			url = 'https://github.com/SpringSource/spring-framework'
+			url = "https://github.com/SpringSource/spring-framework"
 			organization {
-				name = 'SpringSource'
-				url = 'http://springsource.org/spring-framework'
+				name = "SpringSource"
+				url = "http://springsource.org/spring-framework"
 			}
 			licenses {
 				license {
-					name 'The Apache Software License, Version 2.0'
-					url 'http://www.apache.org/licenses/LICENSE-2.0.txt'
-					distribution 'repo'
+					name "The Apache Software License, Version 2.0"
+					url "http://www.apache.org/licenses/LICENSE-2.0.txt"
+					distribution "repo"
 				}
 			}
 			scm {
-				url = 'https://github.com/SpringSource/spring-framework'
-				connection = 'scm:git:git://github.com/SpringSource/spring-framework'
-				developerConnection = 'scm:git:git://github.com/SpringSource/spring-framework'
+				url = "https://github.com/SpringSource/spring-framework"
+				connection = "scm:git:git://github.com/SpringSource/spring-framework"
+				developerConnection = "scm:git:git://github.com/SpringSource/spring-framework"
 			}
 			developers {
 				developer {
-					id = 'jhoeller'
-					name = 'Juergen Hoeller'
-					email = 'jhoeller@vmware.com'
+					id = "jhoeller"
+					name = "Juergen Hoeller"
+					email = "jhoeller@vmware.com"
 				}
 			}
 		}