tests: stabilize test-eol-update on Windows

These appeared in the recent eol fix series.  I'm not sure about the identity
mismatch warning- it seems like a general timing issue, because it happened on
the first run but not when run with `--loop`.  The buildbot also flagged this.

Differential Revision: https://phab.mercurial-scm.org/D7112

tests/test-eol-update.t

@@ -1,276 +1,278 b''
 Test EOL update
 
   $ cat >> $HGRCPATH <<EOF
   > [diff]
   > git = 1
   > EOF
 
   $ seteol () {
   >     if [ $1 = "LF" ]; then
   >         EOL='\n'
   >     else
   >         EOL='\r\n'
   >     fi
   > }
 
   $ makerepo () {
   >     echo
   >     echo "# ==== setup repository ===="
   >     echo '% hg init'
   >     hg init repo
   >     cd repo
   > 
   >     cat > .hgeol <<EOF
   > [patterns]
   > **.txt = LF
   > EOF
   > 
   >     printf "first\nsecond\nthird\n" > a.txt
   >     printf "f\r\n" > f
   >     hg commit --addremove -m 'LF commit'
   > 
   >     cat > .hgeol <<EOF
   > [patterns]
   > **.txt = CRLF
   > f = LF
   > EOF
   > 
   >     printf "first\r\nsecond\r\nthird\r\n" > a.txt
   >     printf "f\n" > f
   >     hg commit -m 'CRLF commit'
   > 
   >     cd ..
   > }
 
   $ dotest () {
   >     seteol $1
   > 
   >     echo
   >     echo "% hg clone repo repo-$1"
   >     hg clone --noupdate repo repo-$1
   >     cd repo-$1
   > 
   >     cat > .hg/hgrc <<EOF
   > [extensions]
   > eol =
   > EOF
   > 
   >     hg update
   > 
   >     echo '% a.txt (before)'
   >     cat a.txt
   > 
   >     printf "first${EOL}third${EOL}" > a.txt
   > 
   >     echo '% a.txt (after)'
   >     cat a.txt
   >     echo '% hg diff'
   >     hg diff
   > 
   >     echo '% hg update 0'
   >     hg update 0
   > 
   >     echo '% a.txt'
   >     cat a.txt
   >     echo '% hg diff'
   >     hg diff
   > 
   > 
   >     cd ..
   >     rm -r repo-$1
   > }
 
   $ makerepo
   
   # ==== setup repository ====
   % hg init
   adding .hgeol
   adding a.txt
   adding f
   $ dotest LF
   
   % hg clone repo repo-LF
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
   % a.txt (before)
   first\r (esc)
   second\r (esc)
   third\r (esc)
   % a.txt (after)
   first
   third
   % hg diff
   diff --git a/a.txt b/a.txt
   --- a/a.txt
   +++ b/a.txt
   @@ -1,3 +1,2 @@
    first\r (esc)
   -second\r (esc)
    third\r (esc)
   % hg update 0
   merging a.txt
   2 files updated, 1 files merged, 0 files removed, 0 files unresolved
   % a.txt
   first
   third
   % hg diff
   diff --git a/a.txt b/a.txt
   --- a/a.txt
   +++ b/a.txt
   @@ -1,3 +1,2 @@
    first
   -second
    third
   $ dotest CRLF
   
   % hg clone repo repo-CRLF
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
   % a.txt (before)
   first\r (esc)
   second\r (esc)
   third\r (esc)
   % a.txt (after)
   first\r (esc)
   third\r (esc)
   % hg diff
   diff --git a/a.txt b/a.txt
   --- a/a.txt
   +++ b/a.txt
   @@ -1,3 +1,2 @@
    first\r (esc)
   -second\r (esc)
    third\r (esc)
   % hg update 0
   merging a.txt
   2 files updated, 1 files merged, 0 files removed, 0 files unresolved
   % a.txt
   first
   third
   % hg diff
   diff --git a/a.txt b/a.txt
   --- a/a.txt
   +++ b/a.txt
   @@ -1,3 +1,2 @@
    first
   -second
    third
 
 Test in repo using eol extension, while keeping an eye on how filters are
 applied:
 
   $ cd repo
 
   $ hg up -q -c -r null
   $ cat > .hg/hgrc <<EOF
   > [extensions]
   > eol =
   > EOF
 
 Update to revision 0 which has no .hgeol, shouldn't use any filters, and
 obviously should leave things as tidy as they were before the clean update.
 
   $ hg up -c -r 0 -v --debug
   resolving manifests
    branchmerge: False, force: False, partial: False
    ancestor: 000000000000, local: 000000000000+, remote: 15cbdf8ca3db
   calling hook preupdate.eol: hgext.eol.preupdate
    .hgeol: remote created -> g
   getting .hgeol
   filtering .hgeol through isbinary
    a.txt: remote created -> g
   getting a.txt
   filtering a.txt through tolf
    f: remote created -> g
   getting f
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg st
 
   $ hg branch b
   marked working directory as branch b
   (branches are permanent and global, did you want a bookmark?)
   $ hg ci -m b
 
 Merge changes that apply a filter to f:
 
   $ hg merge 1
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ hg st
   M .hgeol
   M a.txt
   M f
   $ hg diff
   diff --git a/.hgeol b/.hgeol
   --- a/.hgeol
   +++ b/.hgeol
   @@ -1,2 +1,3 @@
    [patterns]
   -**.txt = LF
   +**.txt = CRLF
   +f = LF
   diff --git a/a.txt b/a.txt
   --- a/a.txt
   +++ b/a.txt
   @@ -1,3 +1,3 @@
   -first
   -second
   -third
   +first\r (esc)
   +second\r (esc)
   +third\r (esc)
   diff --git a/f b/f
   --- a/f
   +++ b/f
   @@ -1,1 +1,1 @@
   -f\r (esc)
   +f
 
 Abort the merge with up -C to revision 0.
 Note that files are filtered correctly for revision 0: f is not filtered, a.txt
 is filtered with tolf, and everything is left tidy.
 
   $ touch .hgeol *  # ensure consistent dirtyness checks ignoring dirstate
   $ hg up -C -r 0 -v --debug
   eol: detected change in .hgeol
   resolving manifests
    branchmerge: False, force: True, partial: False
    ancestor: 1db78bdd3bd6+, local: 1db78bdd3bd6+, remote: 15cbdf8ca3db
   calling hook preupdate.eol: hgext.eol.preupdate
    .hgeol: remote is newer -> g
   getting .hgeol
   filtering .hgeol through isbinary
    a.txt: remote is newer -> g
   getting a.txt
   filtering a.txt through tolf
    f: remote is newer -> g
   getting f
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
   $ touch .hgeol *
   $ hg st --debug
   eol: detected change in .hgeol
   filtering .hgeol through isbinary
   filtering a.txt through tolf
+  skip updating dirstate: identity mismatch (?)
   $ hg diff
 
 Things were clean, and updating again will not change anything:
 
   $ touch .hgeol *
   $ hg up -C -r 0 -v --debug
   eol: detected change in .hgeol
   filtering .hgeol through isbinary
   filtering a.txt through tolf
   resolving manifests
    branchmerge: False, force: True, partial: False
    ancestor: 15cbdf8ca3db+, local: 15cbdf8ca3db+, remote: 15cbdf8ca3db
   calling hook preupdate.eol: hgext.eol.preupdate
+  starting 4 threads for background file closing (?)
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
   $ touch .hgeol *
   $ hg st --debug
   eol: detected change in .hgeol
   filtering .hgeol through isbinary
   filtering a.txt through tolf
 
   $ cd ..
 
   $ rm -r repo