forked from minhngoc25a/freetype2

* include/freetype/ftcolor.h (FT_ColorStopIterator): Add field `read_variable` to indicate whether a variation index base should be read. * src/sfnt/ttcolr.c: (FT_PaintFormat_Internal): New enumerations `FT_COLR_PAINTFORMAT_INTERNAL_VAR_LINEAR_GRADIENT` `FT_COLR_PAINTFORMAT_INTERNAL_VAR_RADIAL_GRADIENT`, and `FT_COLR_PAINTFORMAT_INTERNAL_VAR_SWEEP_GRADIENT`. (read_color_line): New parameter `read_variable`; update callers. (read_paint): Handle new enumerations.