Fix initialization of Pencil2D module for two cases
Fix initialization of Pencil2D module for two cases

- No Pencil 2D installed (version stuff moed to checkRequirements().
- Pencil2d is old (no -v option), but returncode is still 0.

scribblemaniac/RenderChan,scribblemaniac/RenderChan,morevnaproject/RenderChan,morevnaproject/RenderChan