Added a trivial program to randomly corrupt RDB files in /utils.
Added a trivial program to randomly corrupt RDB files in /utils.

4396/redis,pedigree/redis,xuguruogu/redis,pedigree/redis,xuguruogu/redis,xuguruogu/redis,pedigree/redis,4396/redis,xuguruogu/redis,4396/redis,pedigree/redis,4396/redis