arguments; [ticket:2866]
- add dialect specific kwarg functionality to ForeignKeyConstraint, ForeignKey

to query from the ``rdb$relations`` view instead of the
``rdb$relation_fields`` and ``rdb$view_relations`` views.
Variants of both the old and new queries are mentioned on many
FAQ and blogs, however the new queries are taken straight from
the "Firebird FAQ" which appears to be the most official source
of info. [ticket:2898]

underscore.  Courtesy Treeve Jelbert. [ticket:2897]

index were not sorted correctly; they are now sorted
in order of RDB$FIELD_POSITION.

This controls the value of the ``retaining`` flag sent to the
``commit()`` and ``rollback()`` methods of the DBAPI connection.
Defaults to False.  Also in 0.8.2, where it defaults to True.
[ticket:2763]

INT64 has been fixed so that LONG is treated as INTEGER,
INT64 treated as BIGINT, unless the type has a "precision"
in which case it's treated as NUMERIC.  Patch courtesy
Russell Stuart.
[ticket:2757]

- went through examples/ and cleaned out excess list() calls

whereas the other do_rollback_twophase(), savepoint etc. work with
:class:`.Connection`.  the context on these are different as twophase/savepoint
are available at the :class:`.Connection` level, whereas commit/rollback are needed
at a lower level as well.  Rename the argument to "dbapi_connection" when the conneciton
is in fact the DBAPI interface.
- start thinking about being able to track "autocommit" vs. "commit", but not sure
we have a need for this yet.
- have Pool call out to a Dialect for all rollback/commit/close operations now.  Pool
no longer calls DBAPI methods directly.  May use this for a workaround for [ticket:2611]
- add a new Pool event reset() to allow the pool's reset of the connection to be intercepted.
- remove methods in Informix dialect which appear to be hardcoding some isolation
settings on new Transaction only; the isolation API should be implemented for Informix.
also removed "flag" for transaction commit/rollback being not available; this should
be based on server/DBAPI version and we will need someone with test access in order
to help determine how this should work