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.
0: Adding root node
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0: Adding root node
=======
marked working directory as branch a
1: Adding a branch
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1: Adding a branch
=======
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
marked working directory as branch b
created new head
2: Adding b branch
1: Adding a branch
-------
2: Adding b branch
=======
3: Adding b branch head 1
1: Adding a branch
-------
3: Adding b branch head 1
=======
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
created new head
4: Adding b branch head 2
3: Adding b branch head 1
1: Adding a branch
-------
4: Adding b branch head 2
3: Adding b branch head 1
=======
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
created new head
5: Adding b branch head 3
4: Adding b branch head 2
3: Adding b branch head 1
1: Adding a branch
-------
5: Adding b branch head 3
4: Adding b branch head 2
3: Adding b branch head 1
=======
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
6: Merging b branch head 2 and b branch head 3
3: Adding b branch head 1
1: Adding a branch
-------
6: Merging b branch head 2 and b branch head 3
3: Adding b branch head 1
=======
marked working directory as branch c
7: Adding c branch
3: Adding b branch head 1
1: Adding a branch
-------
7: Adding c branch
=======
no changes on branch c containing . are reachable from 3
1
-------
7: Adding c branch
0
-------
0 files updated, 0 files merged, 2 files removed, 0 files unresolved
0
-------
3: Adding b branch head 1
0
-------
6: Merging b branch head 2 and b branch head 3
3: Adding b branch head 1
0
-------
no changes on branch b containing . are reachable from 7
1
=======
0 files updated, 0 files merged, 2 files removed, 0 files unresolved
7: Adding c branch
3: Adding b branch head 1
1: Adding a branch
-------
0: Adding root node
-------
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
7: Adding c branch
3: Adding b branch head 1
1: Adding a branch
-------
1: Adding a branch
-------
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
7: Adding c branch
3: Adding b branch head 1
1: Adding a branch
-------
6: Merging b branch head 2 and b branch head 3
3: Adding b branch head 1
-------
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
7: Adding c branch
3: Adding b branch head 1
1: Adding a branch
-------
6: Merging b branch head 2 and b branch head 3
3: Adding b branch head 1
-------
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
7: Adding c branch
3: Adding b branch head 1
1: Adding a branch
-------
6: Merging b branch head 2 and b branch head 3
3: Adding b branch head 1
-------
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
7: Adding c branch
3: Adding b branch head 1
1: Adding a branch
-------
6: Merging b branch head 2 and b branch head 3
3: Adding b branch head 1
-------
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
7: Adding c branch
3: Adding b branch head 1
1: Adding a branch
-------
6: Merging b branch head 2 and b branch head 3
3: Adding b branch head 1
-------
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
7: Adding c branch
3: Adding b branch head 1
1: Adding a branch
-------
7: Adding c branch
-------
=======
1: Adding a branch
-------
6: Merging b branch head 2 and b branch head 3
3: Adding b branch head 1
-------
7: Adding c branch
-------
abort: unknown revision 'z'!
-------
=======
0: Adding root node
1: Adding a branch
6: Merging b branch head 2 and b branch head 3
3: Adding b branch head 1
7: Adding c branch