Upgrade to Groovy 2.4.5 (plus extracted guavaVersion and okhttpVersion)

build.gradle

@@ -35,8 +35,9 @@ configure(allprojects) { project ->
 	ext.ejbApiVersion        = "3.0"
 	ext.fileuploadVersion    = "1.3.1"
 	ext.freemarkerVersion    = "2.3.23"
-	ext.groovyVersion        = "2.4.4"
+	ext.groovyVersion        = "2.4.5"
 	ext.gsonVersion          = "2.3.1"
+	ext.guavaVersion         = "18.0"
 	ext.hamcrestVersion      = "1.3"
 	ext.hibernate3Version    = "3.6.10.Final"
 	ext.hibernate4Version    = "4.3.11.Final"
@@ -58,6 +59,7 @@ configure(allprojects) { project ->
 	ext.jtaVersion           = "1.2"
 	ext.junitVersion         = "4.12"
 	ext.nettyVersion         = "4.0.31.Final"
+	ext.okhttpVersion        = "2.5.0"
 	ext.openjpaVersion       = "2.4.0"
 	ext.poiVersion           = "3.12"
 	ext.protobufVersion      = "2.6.1"
@@ -645,7 +647,7 @@ project("spring-context-support") {
 		optional(project(":spring-tx"))  // for Quartz support
 		optional("javax.mail:javax.mail-api:${javamailVersion}")
 		optional("javax.cache:cache-api:1.0.0")
-		optional("com.google.guava:guava:18.0")
+		optional("com.google.guava:guava:${guavaVersion}")
 		optional("net.sf.ehcache:ehcache:${ehcacheVersion}")
 		optional("org.quartz-scheduler:quartz:2.2.1")
 		optional("org.codehaus.fabric3.api:commonj:1.1.0")
@@ -709,7 +711,7 @@ project("spring-web") {
 		optional("org.apache.httpcomponents:httpclient:${httpclientVersion}")
 		optional("org.apache.httpcomponents:httpasyncclient:${httpasyncVersion}")
 		optional("io.netty:netty-all:${nettyVersion}")
-		optional("com.squareup.okhttp:okhttp:2.5.0")
+		optional("com.squareup.okhttp:okhttp:${okhttpVersion}")
 		optional("com.fasterxml.jackson.core:jackson-databind:${jackson2Version}")
 		optional("com.fasterxml.jackson.dataformat:jackson-dataformat-xml:${jackson2Version}")
 		optional("com.google.code.gson:gson:${gsonVersion}")