Godeps, eth, tests: update ethash, used shared for testing

Godeps/Godeps.json

...m/ethereum/ethash/cmake/modules/CMakeParseArguments.cmake

...thub.com/ethereum/ethash/cmake/modules/FindCryptoPP.cmake

...github.com/ethereum/ethash/cmake/modules/FindOpenCL.cmake

.../ethash/cmake/modules/FindPackageHandleStandardArgs.cmake

...om/ethereum/ethash/cmake/modules/FindPackageMessage.cmake

...ce/src/github.com/ethereum/ethash/cryptopp/CMakeLists.txt

Godeps/_workspace/src/github.com/ethereum/ethash/ethash.go

Godeps/_workspace/src/github.com/ethereum/ethash/js/LICENSE

...ps/_workspace/src/github.com/ethereum/ethash/js/ethash.js

...ps/_workspace/src/github.com/ethereum/ethash/js/keccak.js

...workspace/src/github.com/ethereum/ethash/js/makekeccak.js

Godeps/_workspace/src/github.com/ethereum/ethash/js/test.js

Godeps/_workspace/src/github.com/ethereum/ethash/js/util.js

...c/github.com/ethereum/ethash/src/benchmark/CMakeLists.txt

...rc/github.com/ethereum/ethash/src/benchmark/benchmark.cpp

...orkspace/src/github.com/ethereum/ethash/src/python/core.c

...pace/src/github.com/ethereum/ethash/test/c/CMakeLists.txt

..._workspace/src/github.com/ethereum/ethash/test/c/test.cpp

.../_workspace/src/github.com/ethereum/ethash/test/c/test.sh