PoC-7: Latest SIGNEXTEND.
Merge branch 'develop' of github.com:ethereum/cpp-ethereum into develop
fix for compiling under llvm
Fix VM test code loading conditions
Merge pull request #436 from debris/develop

fix for compiling under llvm
Merge pull request #438 from imapp-pl/pr-fixes

Fix VM test code loading conditions
Merge remote-tracking branch 'ethereum/develop' into signextend_change

Conflicts:
	libevm/VM.h