Upgrade to Spring 4.1.6

Author: graemerocher

build.gradle

@@ -46,7 +46,7 @@ ext {
     springLoadedVersion = "1.2.3.RELEASE"
     springBootVersion = "1.2.2.RELEASE"
     springLoadedCommonOptions = "-Xverify:none -Dspringloaded.synchronize=true -Djdk.reflect.allowGetCallerClass=true"
-    springVersion = "4.1.5.RELEASE"
+    springVersion = "4.1.6.RELEASE"
     ehcacheVersion = "2.4.6"
     junitVersion = "4.12"
     concurrentlinkedhashmapVersion = "1.4"