Upgrade to Gradle 2.5

Issue: SPR-13012

Author: sbrannen

build.gradle

@@ -1361,7 +1361,7 @@ configure(rootProject) {
 
 	task wrapper(type: Wrapper) {
 		description = "Generates gradlew[.bat] scripts"
-		gradleVersion = "2.4"
+		gradleVersion = "2.5"
 
 		doLast() {
 			def gradleOpts = "-XX:MaxMetaspaceSize=1024m -Xmx1024m"

gradle/wrapper/gradle-wrapper.jar

@@ -1,6 +1,6 @@
-#Wed May 06 21:35:37 CEST 2015
+#Thu Jul 09 16:54:55 EEST 2015
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.4-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.5-bin.zip