Allow JDK8 to be downloaded. Left in other cookie for backwards compatability.

core/src/main/java/hudson/tools/JDKInstaller.java

@@ -389,6 +389,7 @@ public class JDKInstaller extends ToolInstaller {
 
         HttpMethodBase m = new GetMethod(primary.filepath);
         hc.getState().addCookie(new Cookie(".oracle.com","gpw_e24",".", "/", -1, false));
+        hc.getState().addCookie(new Cookie(".oracle.com","oraclelicense","accept-securebackup-cookie", "/", -1, false));
         try {
             while (true) {
                 if (totalPageCount++>16) // looping too much