Raise default max dns timeout to 60 seconds
Raise default max dns timeout to 60 seconds

5 was too short, leading to spurious false timeouts on successive
queries.

zhenglaizhang/libphenom,ChinaLongGanHu/libphenom,zhakui/libphenom,rogerchina/libphenom,ChinaLongGanHu/libphenom,ChinaLongGanHu/libphenom,zhenglaizhang/libphenom,sakishum/libphenom,yangjin-unique/libphenom,sakishum/libphenom,zhakui/libphenom,zhenglaizhang/libphenom,rogerchina/libphenom,seem-sky/libphenom,zhakui/libphenom,yangjin-unique/libphenom,yangjin-unique/libphenom,facebook/libphenom,sakishum/libphenom,dailypips/libphenom,seem-sky/libphenom,dailypips/libphenom,ChinaLongGanHu/libphenom,mhaberler/libphenom,facebook/libphenom,rogerchina/libphenom,mhaberler/libphenom,facebook/libphenom,zhakui/libphenom,dailypips/libphenom,rogerchina/libphenom,yangjin-unique/libphenom,seem-sky/libphenom,facebook/libphenom,zhenglaizhang/libphenom,mhaberler/libphenom,seem-sky/libphenom,mhaberler/libphenom,zhakui/libphenom,mhaberler/libphenom,ChinaLongGanHu/libphenom,seem-sky/libphenom,dailypips/libphenom,sakishum/libphenom,dailypips/libphenom,zhenglaizhang/libphenom,facebook/libphenom,yangjin-unique/libphenom,rogerchina/libphenom,sakishum/libphenom