Converted some more functions to create and dispose of a talloc context on a

Converted some more functions to create and dispose of a talloc context on a
per-call basis rather than per-connection.

Had a bit more of a reformatting fest.

Still need to run it through insure and handle downed connections.
(This used to be commit 46fe5a8fb96974e1323bc3e5d94fda74edbeb852)