fix enconding to new new double/sint64 names

[gordonguthrie]

Goes with these PRs https://github.com/basho/riak_kv/pull/1247 https://github.com/basho/riak_ql/pull/36 https://github.com/basho/riak_test/pull/915

[alexmoore]

Works with the addition of https://github.com/basho/riak_pb/pull/153.

[matthewvon]

+1

[alexmoore]

Thanks for the review @matthewvon, going to stage it for bishop and merge when all the PRs are ready.

[alexmoore]

+1 f218ecbcc6a385834836f55ac21d8ab7d9bf650b

[DSomogyi]

RTS-509

[lukebakken]

Output of make test:

======================== EUnit ========================
module 'eleveldb_ts'
  eleveldb_ts: simple_encode_key_test...ok
  eleveldb_ts: simple_encode_record_test...[0.006 s] ok
  eleveldb_ts: simple_decode_record_test...ok
  [done in 0.015 s]
module 'eleveldb_bump'
  [done in 0.001 s]
module 'basho_bench_driver_eldb'
module 'iterators'
enif_send: env==NULL on non-SMP VMtools.mk:7: recipe for target 'test' failed
make: *** [test] Aborted (core dumped)

[lukebakken]

+1 0bf857ee9f7a1a01bafc83c48391b63b6d1cbb87

[lukebakken]

@borshop retry

[lukebakken]

@borshop merge