tests/test-issue522

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.

#!/bin/sh

# In the merge below, the file "foo" has the same contents in both
# parents, but if we look at the file-level history, we'll notice that
# the version in p1 is an ancestor of the version in p2.  This test
# makes sure that we'll use the version from p2 in the manifest of the
# merge revision.

hg init repo
cd repo

echo foo > foo
hg ci -qAm 'add foo'

echo bar >> foo
hg ci -m 'change foo'

hg backout -r tip -m 'backout changed foo'

hg up -C 0
touch bar
hg ci -qAm 'add bar'

hg merge --debug
hg debugstate | grep foo
hg st -A foo
hg ci -m 'merge'

hg manifest --debug | grep foo
hg debugindex .hg/store/data/foo.i