otfPostProcessor: don't rename glyphs if they are not in UFO lib.postscriptNames
otfPostProcessor: don't rename glyphs if they are not in UFO lib.postscriptNames

http://unifiedfontobject.org/versions/ufo3/lib.plist/#publicpostscriptnames

> If a glyph’s name is not defined in this mapping, the glyph’s name should be used as the Postscript name.

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