[Dev-luatex] Slowdown of font loading

[Patrick Gundlach]

> It looks as if the main computation time is in glyph.boundingbox. Is there any way to speed up the bounding box calculation?

I now believe that most of the time is spent accessing a glyph from the list, such as

f = fontloader.open(...)

f.glyphs[n]

and 

f.glyphs[n].name

Is that possible, that this is slowing down the process significantly? 

Patrick