BZR and the bootstrap

[Angelo Graziosi]

Usually, I bootstrap Emacs [trunk] doing, in short,

cd emacs-trunk
bzr up
mkdir build
cd build
../configure...
make bootstrap

etc.

Now I have noticed, when my internet connection is on (1), that BZR is 
called during the bootstrap. This is flagged both by 'top' and the modem 
lights.

Why BZR is called? What is it doing?

What happens if I switch off the connection (2)?

It seems that if I strip the bzr tree by '.*' file (3),

$ find emacs-trunk -name ".*" -delete

and the connection is on, BZR isn't called at all!

So, which is the right way to bootstrap: (1), (2) or (3)?

Ciao,
Angelo.