Bug#20563954 - INNODB: SUPPORT MOVING A WHOLE DATADIR WITH GENERAL TABLESPACES.
Bug#19896685 - INNODB: RECOGNIZE DIFFERENT PATH STRINGS THAT POINT TO THE SAME LOCATION
Bug#20555168 - INNODB: MAKE GENERAL TABLESPACES PORTABLE FROM WINDOWS TO UNIX
Bug#21068487 - INNODB: PREVENT RELATIVE ISL PATHS UNDER THE DATADIR

RB#8293 - Approved by Marko and Jimmy