Update link to GSS-API tutorial, Java 5 -> Java 7. Add direct link to its troubleshooting page (it is useful, but it is not listed on its index page).
Update link to GSS-API tutorial, Java 5 -> Java 7.
Add direct link to its troubleshooting page (it is useful, but it is not listed on its index page).

git-svn-id: 79cef5a5a257cc9dbe40a45ac190115b4780e2d0@1628576 13f79535-47bb-0310-9956-ffa450edef68

apache/tomcat,Nickname0806/Test_Q4,apache/tomcat,Nickname0806/Test_Q4,apache/tomcat,apache/tomcat,apache/tomcat,Nickname0806/Test_Q4,Nickname0806/Test_Q4