[outlineCompiler] use rounded hmtx widths in autoUseMyMetrics
[outlineCompiler] use rounded hmtx widths in autoUseMyMetrics

and not the original glyph.width, which can be a float

jamesgk/ufo2fdk,googlefonts/ufo2ft,moyogo/ufo2ft,jamesgk/ufo2ft,googlei18n/ufo2ft