[PATCH] missing import for "socket"

[Bryan O'Sullivan]

On Mon, 2005-07-04 at 10:53 +0100, Michael A Fetterman wrote:
> The current tree is missing an import for "socket"...

This should be demand-loaded, as it's only used infrequently.

Here's a patch that moves a whole lot of imports into demand-load-land.
This speeds up hg by 10% in many simple cases.

There's a case to be made for demand-loading all modules for demandload
itself and those of the form "from foo import *".  It's not always
helpful, but the overhead is tiny and it means you don't have to spend
precious minutes reasoning about whether some module should orshould not
be demand-loaded.

	<b
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