Support IPv6 (fixes #118)
Support IPv6 (fixes #118)

MartinThoma/PyMySQL,xjzhou/PyMySQL,methane/PyMySQL,modulexcite/PyMySQL,DashaChuk/PyMySQL,jheld/PyMySQL,jwjohns/PyMySQL,eibanez/PyMySQL,boneyao/PyMySQL,eibanez/PyMySQL,wraziens/PyMySQL,Geoion/Tornado-MySQL,NunoEdgarGub1/PyMySQL,yeyinzhu3211/PyMySQL,pymysql/pymysql,PyMySQL/Tornado-MySQL,yeyinzhu3211/PyMySQL,wraziens/PyMySQL,PyMySQL/PyMySQL,xjzhou/PyMySQL,nju520/PyMySQL,lzedl/PyMySQL,lzedl/PyMySQL,mosquito/Tornado-MySQL,aio-libs/aiomysql,Ting-y/PyMySQL,pulsar314/Tornado-MySQL,anson-tang/PyMySQL