- skipped the tests in allowedFailInCurrentBuild()
- replaced doAssert() with check() in testFixtureIndexes() so we can see
both hash values on failure
- checking filename extension for JSON tests to avoid editor swap files
- replaced the duplicated block values in the main net's ChainConfig
with values from forkBlocks
- allowed overriding the current fork in computations, because the old
strategy of only looking at the block number doesn't work with JSON tests
where the block number is usually 1
- explicitly pass the fork to gasCosts() and use it for conditional cost
calculation
- fixed a logic error in the CREATE opcode
- fixed VM selection based on current fork in updateOpcodeExec()
- single point of control for supported forks in tests (just one fork, at the
moment)
- 44 new test failures (that were probably passing for the wrong reasons)