[PATCH 0 of 9] improvements for named branches

[Jesse Glick]

Matt Mackall wrote:
> How do you unclose a branch?

Possible alternative: consider a head to be closed iff it contains a 
file '.hgclosed' in the root dir (contents irrelevant, could be empty or 
contain an explanatory message). Simple to close or unclose a branch 
using hg add/rem, no extra metadata field needed, change takes effect 
with the commit. A branch would be closed if all its heads were closed.