fix wrong cast
fix wrong unnecessary downcast
Make OOG on precompileds consistent.
Warning fix.
Use high-res clock for randoms.
Whisper test.
Merge pull request #506 from CJentzsch/bugfix

fix wrong unnecessary downcast
Merge #505
Merge branch 'develop' of github.com:ethereum/cpp-ethereum into develop
Merge pull request #504 from CJentzsch/NewStateTests

All unintended VM exceptions work like OOG in tests
Merge remote-tracking branch 'upstream/develop' into NewStateTests
Store return value of call to precompiled contract in test
Create state test with commandline flag