Remove std::.
Import directive.
Multi-source and multi-contract compiler.
Improved external interface for multi-source and multi-contract compilation.
fix stackoverflow in calldataload, codecopy, extcodecopy + some tests
avoid code repetition in vm
minor fix
even less code
Merge remote-tracking branch 'upstream/develop' into newTests
Add exception in vm
Merge remote-tracking branch 'ethereum/develop' into sol_import

Conflicts:
	libsolidity/CompilerStack.cpp
	libsolidity/CompilerStack.h
	solc/main.cpp
Renamed url to identifier and added some comments.
state log tests
thread-safety fix
Merge remote-tracking branch 'upstream/develop' into stateLogTests
Comments and braces.
Merge pull request #572 from CJentzsch/stateLogTests

State log tests
Remove verbosity.
Merge pull request #571 from ethereum/network

thread-safety, WhisperPeer::sendMessages()
Merge branch 'develop' of github.com:ethereum/cpp-ethereum into develop