Add SetPlotOutlineMode(False)

[andresmanelli]

Using (almost) latest devel version of KiCad, the output SVG file was populated with polylines instead of paths. This PR fixes the problem where (I think), KiCad was adding another general outline to the plot.

Let me know if this breaks anything, I tested it with good results.

[yaqwsx]

This change is incompatible with older version of KiCAD, as the method does not exist. Please wrap it in a similar manner as in #1

[yaqwsx]

Here is the error trace with older version of KiCAD:

End of KiCAD debug output
Traceback (most recent call last):
  File "./pcbdraw.py", line 368, in <module>
    wrapper.append(get_board_substrate(board, style))
  File "./pcbdraw.py", line 215, in get_board_substrate
    popt.SetPlotOutlineMode(False)
  File "/usr/lib/python2.7/dist-packages/pcbnew.py", line 10801, in <lambda>
    __getattr__ = lambda self, name: _swig_getattr(self, PCB_PLOT_PARAMS, name)
  File "/usr/lib/python2.7/dist-packages/pcbnew.py", line 74, in _swig_getattr
    return _swig_getattr_nondynamic(self, class_type, name, 0)
  File "/usr/lib/python2.7/dist-packages/pcbnew.py", line 69, in _swig_getattr_nondynamic
    return object.__getattr__(self, name)
AttributeError: type object 'object' has no attribute '__getattr__'

[andresmanelli]

I just pushed the try/except block. Does it solve the compatibility issue?

[yaqwsx]

Perfect, thanks for the contribution!