add an explicit function for loading tables from database

[Former user]

I do not like the interface:

Table(table_name, autoload=True)

for loading a table.

I would like to have an explicit function like

load(table_name)

and a companion:

load_all()

to load all tables at once

Thanks Manlio Perillo

[Mike Bayer]

there needs to be only one way to do things, alternate interfaces can be created in userland....