sqlalchemy/orm, sqlalchemy/event, sqlalchemy/testing

Conflicts:
	lib/sqlalchemy/dialects/mssql/base.py
	lib/sqlalchemy/dialects/mysql/base.py
	lib/sqlalchemy/dialects/mysql/mysqldb.py
	lib/sqlalchemy/dialects/oracle/base.py
	lib/sqlalchemy/dialects/sybase/base.py
	lib/sqlalchemy/orm/attributes.py
	lib/sqlalchemy/orm/evaluator.py
	lib/sqlalchemy/orm/identity.py
	lib/sqlalchemy/orm/instrumentation.py
	lib/sqlalchemy/orm/loading.py
	lib/sqlalchemy/orm/mapper.py
	lib/sqlalchemy/orm/session.py
	lib/sqlalchemy/orm/sync.py
	lib/sqlalchemy/sql/compiler.py
	lib/sqlalchemy/sql/selectable.py
	lib/sqlalchemy/testing/requirements.py
	lib/sqlalchemy/testing/suite/test_select.py

Python version < 2.6.5, working around the
"no unicode keyword arg" bug as these args are passed along as
keyword args within some reflection processes.
fixes #3123

  to get all flake8 passing

specify a :func:`.text` expression as the target; the index no longer
needs to have a table-bound column present if the index is to be
manually added to the table, either via inline declaration or via
:meth:`.Table.append_constraint`. fixes #3028

   "@", or "/" must be encoded." - so re-apply encoding to both password
and username, don't encode spaces as plus signs, don't encode any chars
outside of :, @, / on stringification - but we still parse for any
%XX character (is that right?)

with @_legacy_signature, will inspect incoming listener functions
to see if they match an older signature, will wrap into a newer sig
- add an event listen argument named=True, will send all args as
kw args so that event listeners can be written with **kw, any combination
of names
- add a doc system to events that writes out the various calling styles
for a given event, produces deprecation messages automatically.
a little concerned that it's a bit verbose but will look at it up
on RTD for awhile to get a feel.
- change the calling signature for bulk update/delete events - we have
the BulkUD object right there, and there's at least six or seven things
people might want to see, so just send the whole BulkUD in
[ticket:2775]