tests/test-churn.out

inotify: do not rely on stat(.hg/dirstate) to invalidate our dirstate

stat() is not reliable when several events happen quickly. Which means
that if two hg actions occur in the same second, stat() result will not
reflect the second change. And only _one_ invalidate() call was done.

Also ignore the events that occur when wlock is held, since wlock release
will trigger a full rescan anyway.

Fixes 17 run-tests.py --inotify tests.

% 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 *****************
% churn with separated added/removed lines
user1           +3/-1 +++++++++++++++++++++++++++++++++++++++++--------------
user3           +3/-0 +++++++++++++++++++++++++++++++++++++++++
user2           +2/-0 +++++++++++++++++++++++++++
% changeset number churn
user1      4 ***************************************************************
user3      3 ***********************************************
user2      2 ********************************
adding foo
test      0