8132130: some docs cleanup
Summary: some docs cleanup
Reviewed-by: mullan

8044500: Add kinit options and krb5.conf flags that allow users to obtain renewable tickets and specify ticket lifetimes
Reviewed-by: valeriep

8054834: Modular Source Code
Reviewed-by: alanb, chegar, ihse, mduigou
Contributed-by: alan.bateman@oracle.com, alex.buckley@oracle.com, chris.hegarty@oracle.com, erik.joelsson@oracle.com, jonathan.gibbons@oracle.com, karen.kinnear@oracle.com, magnus.ihse.bursie@oracle.com, mandy.chung@oracle.com, mark.reinhold@oracle.com, paul.sandoz@oracle.com