[rfc] bzr-colo into core

[Alexander Belchenko]

John Szakmeister пишет:
> On Wed, Mar 30, 2011 at 5:52 AM, John Arbash Meinel
> <john at arbash-meinel.com> wrote:
> [snip]
>> I know Aaron has mentioned that in his layout, he might move the working
>> tree, but he is unlikely to move the repository, so absolute paths
>> actually work better for him.  I do wonder what the breakpoint is.
>>
>> IMO, it is pretty clear for colo. If the branch is a subdirectory of the
>> tree root, then use a relative path. If the branch is outside, then *I*
>> would say, if it is within 1 or 2 '..' then use relative path. Otherwise
>> use absolute path.
> 
> That might be a reasonable alternative.  Although, it does add an
> extra edge for the user to keep in mind.  You can never be sure that
> if you move everything whether or not it'll all continue to work,
> unless you check and see whether it's using relative or absolute
> paths. :-(

So, the rule could be more stricter than John suggested: use relative 
paths only for colo-things. For light checkouts outside colo workspace 
use only absolute paths, and maybe give user the control over 
relative/absolute checkout via command-line option.