clone memcache data to other memcache
Usage Example:
from memcache_clone import memcache
s = memcache('127.0.0.1',11211)
s.con()
#set(key,value,len,flags,express)
s.set("key","value",5,0,0)
#get(key) return list : list[value,value_len,flags]
s.get("key")[0]
#clone
s.clone('127.0.0.1',11212)