SEC-971: getter for cookieName in AbstractRememberMeServices

http://jira.springframework.org/browse/SEC-971. Added getCookieName() method.

core/src/main/java/org/springframework/security/ui/rememberme/AbstractRememberMeServices.java

@@ -309,6 +309,10 @@ public abstract class AbstractRememberMeServices implements RememberMeServices,
         this.cookieName = cookieName;
     }
 
+    protected String getCookieName() {
+        return cookieName;
+    }
+
     public void setAlwaysRemember(boolean alwaysRemember) {
         this.alwaysRemember = alwaysRemember;
     }