bug#34765: 26.1; with-temp-buffer should not run buffer-list-update-hook

[Stefan Monnier]

>> Since we currently keep this special treatment limited to a small
>> number of buffer names, I'm not sure there's a need to expose this
>> facility to Lisp.
> I'm not sure either.

How 'bout this: additionally to "hidden buffers" which start with a SPC
character, we introduce the notion of "internal buffers" whose name
starts with another special first char or with two SPC chars and disable
those buffers's hooks.


        Stefan