BZ1518320 - entry cache crash fix
    
    Description: THis patch is combination of all the entry cache fixes.
    
                 If these fixes are not enough, there is an experimental
                 "fix" that should prevent the crash.  A message will be
                 logged that reports the crash was averted:
    
                      "(avoided crash, but cache was corrupted)"
    
                 The customer should monitor the errors log for this text,
                 and let GSS know if they see it.