[maint] The GDB maintenance process

[Andrew Cagney]

> -Branches should have an owner.
> The owner can set further policy for a branch, but may not change the 
> ground rules.  In particular, they can set a policy for commits (be it 
> adding more reviewers or deciding who can commit).

Yep.

> -All commits to a branch must be covered by an assignment
> This saves us from the situation where a branch might become contaminated.

Um, er, yes, `obviously' (How did I forget that one :-( :-).

Andrew