tests/test-churn.out

cmdutil: minor refactoring of changeset_printer._show

- use ctx.branch() instead of directly accessing the extra field "branch"
- move definitions of locals ('extra' and 'branch') down to where they
  are used

% create test repository
adding a
adding b
adding c
% churn separate directories
user1      1 ***************************************************************
% churn all
user3      3 ***************************************************************
user1      3 ***************************************************************
user2      2 ******************************************
% churn up to rev 2
user2      2 ***************************************************************
user1      1 *******************************
% churn with aliases
alias3      3 **************************************************************
alias1      3 **************************************************************
user2       2 *****************************************
% churn with .hgchurn
alias3      3 **************************************************************
alias1      3 **************************************************************
user2       2 *****************************************
% churn with column specifier
user3      3 ***********************
user1      3 ***********************
user2      2 ***************
% churn by hour
06      1 ****************
09      2 *********************************
12      4 ******************************************************************
13      1 ****************
adding foo
test      0