Switch back to normal map for the moment.
Implement optimised hash and equality operators for h256, and specialise std::hash<eth::h256>.
Hash instructions require at least one on stack.
Merge branch 'develop' of github.com:ethereum/cpp-ethereum into develop
Fixed hash so compiles in a C++ compiler. Not sure what compiler Tim was
using.
removed unused class (DBFace)
Hash fix.
Merge pull request #82 from freizeit/rm-unused-DBFace

remove unused class (DBFace)
Make good arithmetic operations.
Comments and boolean operators.
Merge branch 'develop' of github.com:ethereum/cpp-ethereum into develop
Binary operators.
Merge branch 'release-poc-3' into develop
Unary operators.
Merge branch 'release-poc-3' into develop
More VM tests.