[MERGE] run_bzr_subprocess(env_changes={})

[John Arbash Meinel]

Martin Pool wrote:
> On 28 Aug 2006, John Arbash Meinel <john at arbash-meinel.com> wrote:
> 

...

> 
> This doesn't test asking that a variable be deleted.  Perhaps you could
> set it in the parent process, then run it in a subprocess set it to
> None, then in a finally block remove it.
> 
> +1 with those changes.
> 

It is a little bit tricky, because we don't have many env vars that do
stuff when they *aren't* set. :) But I came up with the attached patch.
I went ahead and submitted it.

John
=:->

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