Merge pull request ethereum#830 from ethereum/eip2930_reference_docs

Added the EIP2930 accessList field to the test reference

Merge pull request ethereum#822 from ethereum/rtest

random state test 648

Merge pull request ethereum#814 from ethereum/solve_364

Put a value to be detected if the returndatasize isn't written

Merge pull request ethereum#805 from ethereum/regenerate

regenerate all tests

Merge pull request ethereum#799 from ethereum/extcodehashEmpty

EXTCODEHASH has weird behavior

Merge pull request ethereum#799 from ethereum/extcodehashEmpty

EXTCODEHASH has weird behavior

Merge pull request ethereum#799 from ethereum/extcodehashEmpty

EXTCODEHASH has weird behavior

Merge pull request ethereum#786 from qbzzt/underflow3

The underflow tests

Update Makefile

Merge pull request ethereum#687 from ethereum/new-release-v700

v7.0.0 pre-Berlin HF Release