locations.conf is only consulted when there's a branch

[Matthew Fuller]

When there's no branch at a given location, locations.conf isn't consulted. This may be seen by setting something like:

[/home/fullermd/tmp]
email = <email address hidden>

then going into ~/tmp and running "bzr whoami". With no bzrdir there, the default is still shown. init-repo does the same. Only after init'ing a branch there does it get the new email.

(I have no verified whether this is actually just a quirk in whoami, but I'm guessing it's a general thing with locations.conf parsing)

[zsquareplusc (zsquareplusc)]

seeing this too with bzr V1.17

[zsquareplusc (zsquareplusc)]

Even worse, there seems to be an issue when setting the name through whoami. It writes to bazaar.conf, but then when displaying it reads form locations.conf again. Either "bzr whoami <newname>" should be an error in this case, or it should write locations.conf.