origin redis 4.0.0 code from opensource redis

Author: Dennis Wu

.gitignore

@@ -0,0 +1,30 @@
+.*.swp
+*.o
+*.log
+dump.rdb
+redis-benchmark
+redis-check-aof
+redis-check-rdb
+redis-check-dump
+redis-cli
+redis-sentinel
+redis-server
+doc-tools
+release
+misc/*
+src/release.h
+appendonly.aof
+SHORT_TERM_TODO
+release.h
+src/transfer.sh
+src/configs
+redis.ds
+src/redis.conf
+src/nodes.conf
+deps/lua/src/lua
+deps/lua/src/luac
+deps/lua/src/liblua.a
+.make-*
+.prerequisites
+*.dSYM
+Makefile.dep