tests: on windows, run command explicitly in sh for working command substitution
On windows, os.system runs the command in cmd.exe, which does not know command
substitution. To let this work, run the command explicitly in sh.
This fixes the failure of this test on windows.
$ "$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
$ "$TESTDIR/killdaemons.py" hg.pid