RDB file creation refactored to target non-disk target.
RDB file creation refactored to target non-disk target.

Jonavin/redis,hanmichael/redis,laurencee/redis,miminus/redis,miminus/redis,janeasystems/redis,ScottKaiGu/redis,janeasystems/redis,upsoft/redis,jacklee0810/redis,quangnguyen90/redis,janeasystems/redis,laurencee/redis,liqiang199105/redis,hanmichael/redis,damy/redis,Jonavin/redis,shanegxxiao/redis,Cybermaxs/redis,kolonse/redis,upsoft/redis,kts12345/redis,kolonse/redis,upsoft/redis,erwin00776/redis-2.8-optimize,jqk6/redis,quangnguyen90/redis,ideaar/redis,ScottKaiGu/redis,liqiang199105/redis,ideaar/redis,laurencee/redis,laurencee/redis,adamweixuan/redis,adamweixuan/redis,ScottKaiGu/redis,ideaar/redis,alpha8/redis,Jonavin/redis,quangnguyen90/redis,ideaar/redis,quangnguyen90/redis,kolonse/redis,jacklee0810/redis,upsoft/redis,kolonse/redis,alpha8/redis,kts12345/redis,LittlePeng/redis,shanegxxiao/redis,LittlePeng/redis,jqk6/redis,adamweixuan/redis,liqiang199105/redis,erwin00776/redis-2.8-optimize,alpha8/redis,damy/redis,damy/redis,jaambee/redis,laurencee/redis,alpha8/redis,shanegxxiao/redis,janeasystems/redis,ideaar/redis,jaambee/redis,enginekit/redis,jacklee0810/redis,Jonavin/redis,miminus/redis,sidsen/redis,kolonse/redis,jqk6/redis,kts12345/redis,adamweixuan/redis,hanmichael/redis,jaambee/redis,Cybermaxs/redis,liqiang199105/redis,enginekit/redis,LittlePeng/redis,ScottKaiGu/redis,erwin00776/redis-2.8-optimize,sidsen/redis,sidsen/redis,hanmichael/redis,damy/redis,miminus/redis,kts12345/redis,hanmichael/redis,jacklee0810/redis,adamweixuan/redis,shanegxxiao/redis,sidsen/redis,Cybermaxs/redis,upsoft/redis,erwin00776/redis-2.8-optimize,damy/redis,jqk6/redis,alpha8/redis,kts12345/redis,enginekit/redis,sidsen/redis,janeasystems/redis,liqiang199105/redis,quangnguyen90/redis,jaambee/redis,jaambee/redis,ScottKaiGu/redis,enginekit/redis,Cybermaxs/redis,Jonavin/redis,enginekit/redis,shanegxxiao/redis,sidsen/redis,jacklee0810/redis,jqk6/redis,miminus/redis,Cybermaxs/redis