Re: gdiplus: Create a GDI brush only when needed.

[Vincent Povirk]

The right solution is to remove the gdibrush and logbrush fields from
GpBrush, and generate the HBRUSH as needed in brush_fill_path. Note
that brush_fill_path will only be called for solid and hatch brushes
(those for which brush_can_fill_path returns true), so we don't need
the code to create a gdi brush for the other types.