[ft] Cubic start and end points

[Astle, David]

I’m using FreeType to extract outline data from TrueType fonts to then be rendered in OpenVG. I’m running into an issue where a few characters in the font have a contour where either the start or end point is tagged as FT_CURVE_TAG_CONIC, rather than FT_CURVE_TAG_ON (as is the case with most characters). What is the proper handling of these cases?