Security upgrade from 3.0.1 to 3.0.2.

<ChangeLog>

--[ Redis 3.0.2 ] Release date: 4 Jun 2015

Upgrade urgency: HIGH for Redis because of a security issue.

LOW for Sentinel.

• [FIX] Critical security issue fix by Ben Murphy: http://t.co/LpGTyZmfS7
• [FIX] SMOVE reply fixed when src and dst keys are the same. (Glenn Nethercutt)
• [FIX] Lua cmsgpack lib updated to support str8 type. (Sebastian Waisbrot)

• [NEW] ZADD support for options: NX, XX, CH. See new doc at redis.io. (Salvatore Sanfilippo)
• [NEW] Senitnel: CKQUORUM and FLUSHCONFIG commands back ported. (Salvatore Sanfilippo)

</ChangeLog>