[0.7.3 RC1] Directory "data.old" installed inside windows.

[0.7.3 RC1] Directory "data.old"
C:\Games\SuperTuxKart\data\
C:\Games\SuperTuxKart\data.old\
C:\Games\SuperTuxKart\Prerequisites\
Is this normal to have the "data.old" directory ?
C:\Games\SuperTuxKart\data\
C:\Games\SuperTuxKart\data.old\
C:\Games\SuperTuxKart\Prerequisites\
Is this normal to have the "data.old" directory ?