fixed: l_isxdigit macro should only allow hexadecimal characters
fixed: l_isxdigit macro should only allow hexadecimal characters

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