bug in importlater usage

[Mike Bayer]

e.g.::

from sqlalchemy.sql import column
from sqlalchemy import Integer

x = column('x', Integer)
y = column('y', Integer)

expr = (y - z)
print expr.label('asdf')

[Mike Bayer]

fix for this one is:

default = util.importlater("sqlalchemy.engine.default")

but the recursion thing should be prevented

[Mike Bayer]

can't really test this one without adding a fake package to the tests. 5247c244ca6595f2685f1c0c271618eda7cb5e62

[Mike Bayer]

screwed that up

[Mike Bayer]

77f641429f019d06cc467ec4e57ae94f808d70bd

[Mike Bayer]

Removing milestone: 0.6.6 (automated comment)