[NTG-context] Arabic numbers (in MkIV) should be left to right

Arabic numbers (characters with bidi property "an") should be left to right, just as European numbers ((characters with bidi property "en"). Currently Arabic numbers are made right to left: \setupdirections[bidi=global] \starttext 12345\par ١٢٣٤٥ \stoptext Both line should have the same digits order. I think "d == "an"" in core-spa.lua line 1075 should be moved to line 1071 (I tested it and it does fix this issue for me). -- Khaled Hosny Arabic localizer and member of Arabeyes.org team