#137 Unicode queries choke

[Aaron Swartz]

Using SQLObject 0.7rc1:

>>> db.Item.select(db.Item.q.title == u'foo').count()
[...]
TypeError: argument 1 must be str, not unicode

[Oleg Broytman]

Logged In: YES
user_id=4799

This is dup for bug N 1243224. .select() and .selectBy()
require str, not unicode.

db.Item.select(db.Item.q.title ==
u'foo'.encode(dbEncoding)).count()