Log Message:
Update to 1.6.2, from Hiramatsu Yoshifumi in PR 21465.
Changes:
This version has three new options.
   -P NAME,   --prev-symlink=NAME  maintain a symbolic link from NAME to previous log
   -p PERIOD, --period=PERIOD set the rotation period explicitly
   -d DELAY,  --delay=DELAY   set the rotation period delay