[Development] branch namespacing policy?

[Oswald Buddenhagen]

moin,

prompted by the discussion about the blackberry branch, i again started
to wonder about a cleaner separation of the branches.

in the qtcreator repository for example i established the convention
that temporary branches must all have a wip/ prefix.
a similar convention could be adopted for vendor branches, say a vendor/
(gasp!) prefix.

go/no-go?