tests/test-inotify-issue1542.t

check-code: fix issues with finding patterns in unified tests, fix tests

- old-style patterns without ^ were getting improperly anchored
- finditer was matching against beginning of line poorly
- \s was matching newlines
- [^x] was matching newlines

so we:

- remove earlier hacks for multiline matching
- fix unified test anchoring by adding .*
- replace \s with [ \t]
- replace [^x] with [^\nx]
- force all matches into multiline mode so ^ anchors work

This uncovers a number of test issues that are then repaired.

  $ "$TESTDIR/hghave" inotify || exit 80
  $ hg init
  $ touch a
  $ mkdir dir
  $ touch dir/b
  $ touch dir/c
  $ echo "[extensions]" >> $HGRCPATH
  $ echo "inotify=" >> $HGRCPATH
  $ hg add dir/c

inserve

  $ hg inserve -d --pid-file=hg.pid 2>&1
  $ cat hg.pid >> "$DAEMON_PIDS"
  $ hg st
  A dir/c
  ? a
  ? dir/b
  ? hg.pid

moving dir out

  $ mv dir ../tmp-test-inotify-issue1542

status

  $ hg st
  ! dir/c
  ? a
  ? hg.pid
  $ sleep 1

Are we able to kill the service? if not, the service died on some error

  $ kill `cat hg.pid`