Some AuthUserReuqest polish and bug removal

Some AuthUserReuqest polish and bug removal

* merge multiple authenticate and authenticateChildren members from
  child classes into the parent AuthUserRequest

* severe circular ref-count links between AuthUser object and
  AuthUserRequest. It appears to be unused and causes problems by merely
  existing.

* remove entry from client_side unsettign the auth credentials of a
  request simply because it was being logged.
  The log code woud be better pulling the credentials from the request
  directly when needed instead of cloning the text. RefCount in both request
  and AuthUser holds the info in place until log output is finished.
  But that polish is left for later.