Merge branch '5.9p1' into 6.0p1

* 5.9p1:
  Sync keyword
  ChrootDirectory was added in 5.0
The copyright was removed in base in r213250
Merge branch '5.8p2' into 5.9p1

* 5.8p2:
  The copyright was removed in base in r213250
Merge branch '5.9p1' into 6.0p1

* 5.9p1:
  The copyright was removed in base in r213250
Merge branch '6.0p1' into 6.1p1

* 6.0p1:
  The copyright was removed in base in r213250