Add bug testcase for comma expr issue (GH-131)
Add bug testcase for comma expr issue (GH-131)

jmptrader/duktape,harold-b/duktape,sloth4413/duktape,harold-b/duktape,pombredanne/duktape,kphillisjr/duktape,svaarala/duktape,eddieh/duktape,markand/duktape,jmptrader/duktape,sloth4413/duktape,pombredanne/duktape,kphillisjr/duktape,thurday/duktape,skomski/duktape,sloth4413/duktape,zeropool/duktape,chenyaqiuqiu/duktape,markand/duktape,chenyaqiuqiu/duktape,chenyaqiuqiu/duktape,harold-b/duktape,harold-b/duktape,nivertech/duktape,zeropool/duktape,skomski/duktape,nivertech/duktape,thurday/duktape,sloth4413/duktape,harold-b/duktape,pombredanne/duktape,jmptrader/duktape,haosu1987/duktape,svaarala/duktape,sloth4413/duktape,thurday/duktape,eddieh/duktape,chenyaqiuqiu/duktape,tassmjau/duktape,markand/duktape,pombredanne/duktape,tassmjau/duktape,nivertech/duktape,zeropool/duktape,eddieh/duktape,harold-b/duktape,haosu1987/duktape,svaarala/duktape,skomski/duktape,harold-b/duktape,zeropool/duktape,kphillisjr/duktape,skomski/duktape,reqshark/duktape,tassmjau/duktape,chenyaqiuqiu/duktape,sloth4413/duktape,sloth4413/duktape,markand/duktape,thurday/duktape,jmptrader/duktape,skomski/duktape,skomski/duktape,sloth4413/duktape,markand/duktape,jmptrader/duktape,chenyaqiuqiu/duktape,eddieh/duktape,svaarala/duktape,zeropool/duktape,markand/duktape,harold-b/duktape,svaarala/duktape,haosu1987/duktape,skomski/duktape,nivertech/duktape,nivertech/duktape,tassmjau/duktape,reqshark/duktape,chenyaqiuqiu/duktape,jmptrader/duktape,jmptrader/duktape,reqshark/duktape,skomski/duktape,pombredanne/duktape,tassmjau/duktape,kphillisjr/duktape,reqshark/duktape,reqshark/duktape,eddieh/duktape,eddieh/duktape,nivertech/duktape,zeropool/duktape,zeropool/duktape,haosu1987/duktape,harold-b/duktape,svaarala/duktape,kphillisjr/duktape,markand/duktape,haosu1987/duktape,thurday/duktape,eddieh/duktape,thurday/duktape,nivertech/duktape,kphillisjr/duktape,markand/duktape,markand/duktape,skomski/duktape,reqshark/duktape,sloth4413/duktape,haosu1987/duktape,thurday/duktape,eddieh/duktape,reqshark/duktape,reqshark/duktape,svaarala/duktape,nivertech/duktape,pombredanne/duktape,nivertech/duktape,zeropool/duktape,harold-b/duktape,eddieh/duktape,zeropool/duktape,tassmjau/duktape,tassmjau/duktape,skomski/duktape,jmptrader/duktape,haosu1987/duktape,nivertech/duktape,pombredanne/duktape,reqshark/duktape,haosu1987/duktape,kphillisjr/duktape,thurday/duktape,chenyaqiuqiu/duktape,thurday/duktape,svaarala/duktape,tassmjau/duktape,sloth4413/duktape,jmptrader/duktape,zeropool/duktape,chenyaqiuqiu/duktape,tassmjau/duktape,jmptrader/duktape,pombredanne/duktape,svaarala/duktape,reqshark/duktape,eddieh/duktape,pombredanne/duktape,kphillisjr/duktape,thurday/duktape,tassmjau/duktape,markand/duktape,haosu1987/duktape,kphillisjr/duktape,pombredanne/duktape,kphillisjr/duktape,haosu1987/duktape,chenyaqiuqiu/duktape