Need longer freeze time before tagging

[Stephen Kelly]

Hi,

The ongoing mess regarding the shared desktop ontologies shows that the time 
between hard feature freeze and tagging is not long enough.

Making destructive or potentially destructive changes on the day of freeze 
(and one week before tagging) is a very bad idea. If it happens anyway, then 
hopefully schedule changes can soften the blow in the future.

I propose a smaller 'merge window' in release branches and a bigger time 
between hard freeze and the start of the tagging cycle. Clearly one week is 
not enough to fix messes. That will give everyone more time (before tagging) 
to fix messes introduced on the day of freeze in the future.

Thoughts?

Thanks,

Steve.