Fix for ticket #67, define socket.SOL_TCP for Python 2.5
Fix for ticket #67, define socket.SOL_TCP for Python 2.5

pika/pika,skftn/pika,Tarsbot/pika,vrtsystems/pika,vitaly-krugl/pika,shinji-s/pika,Zephor5/pika,fkarb/pika-python3,zixiliuyue/pika,knowsis/pika,renshawbay/pika-python3,hugoxia/pika,reddec/pika,jstnlef/pika,benjamin9999/pika