tests/test-issue1306.out

cmdutil: changeset_printer: use methods of filectx/changectx.

This allows extensions that modify changeset metadata (e.g.
description) by overriding methods of changectx to get consistent
behavior from all log-like commands, regardless of whether templates
or styles are used. Without this, overriding changectx methods works
if you use styles or templates, but not with default log format.

This meant adding filectx.extra() for consistency with changectx.

% initialize remote repo with branches
adding a
marked working directory as branch br
adding c
changeset:   2:1630aed6ed2b
branch:      br
tag:         tip
user:        test
date:        Thu Jan 01 00:00:00 1970 +0000
summary:     c

changeset:   1:234f53e6c5ff
branch:      br
user:        test
date:        Thu Jan 01 00:00:00 1970 +0000
summary:     b

changeset:   0:cb9a9f314b8b
user:        test
date:        Thu Jan 01 00:00:00 1970 +0000
summary:     a

% try cloning -r branch
requesting all changes
adding changesets
adding manifests
adding file changes
added 3 changesets with 2 changes to 2 files
updating working directory
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
changeset:   2:1630aed6ed2b
branch:      br
tag:         tip
user:        test
date:        Thu Jan 01 00:00:00 1970 +0000
summary:     c

% try cloning -rother clone#branch
requesting all changes
adding changesets
adding manifests
adding file changes
added 3 changesets with 2 changes to 2 files
updating working directory
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
changeset:   0:cb9a9f314b8b
user:        test
date:        Thu Jan 01 00:00:00 1970 +0000
summary:     a

% try cloning -r1 clone#branch
requesting all changes
adding changesets
adding manifests
adding file changes
added 3 changesets with 2 changes to 2 files
updating working directory
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
changeset:   1:234f53e6c5ff
branch:      br
user:        test
date:        Thu Jan 01 00:00:00 1970 +0000
summary:     b