small refactor on suffixlists for asci get cmd
small refactor on suffixlists for asci get cmd

pull out some common code.

dormando/memcached,guikcd/memcached,dormando/memcached,guikcd/memcached,memcached/memcached,dormando/memcached,guikcd/memcached,memcached/memcached,guikcd/memcached,memcached/memcached,dormando/memcached,dormando/memcached,gencer/memcached,gencer/memcached,memcached/memcached,memcached/memcached,guikcd/memcached,gencer/memcached,gencer/memcached,gencer/memcached