[PATCH] Remove talloc_reference of event context in samba_dsdb stack and smb_krb5_init_context

[Andrew Bartlett]

Given the Team's dislike for both nested event loops and
talloc_reference, it seems fitting that my 'modest proposal' for
limiting one gives the opportunity to find and remove the the latter.

This patch uses the fact that the dsdb modules do not need to talk over
the network, so no event context need be specified or handled over to
talloc_reference, based on the messages my test of the patch in
https://lists.samba.org/archive/samba-technical/2014-April/099184.html 

Then I follow up by removing the parameter entirely, as it just isn't
needed.

Please review/push

Andrew Bartlett
-- 
Andrew Bartlett                       http://samba.org/~abartlet/
Authentication Developer, Samba Team  http://samba.org
Samba Developer, Catalyst IT          http://catalyst.net.nz/services/samba

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