DB prototyped.
PoC-7 Exception severity uniform.
Fix QEthereum.
Build fix.
PoC-7: Reversion of 0-hashes, empty-list hashes and sha3('') -> ''
Move suicides into SubState and include logs and refunds.
Refund gas from zero-resetting SSTOREs.
use ETHEREUM_TEST_PATH in all tests
LOG instructions.
Add VMTRACE to user defined vm test

Conflicts:
	test/vm.cpp
VMTRACE for internal calls

Conflicts:
	test/vm.cpp
Draft of new LOG/bloom/headers/block format.
Fixes for the latest LOG stuff.
log VMTRACE in file for user defined test
Merge remote-tracking branch 'upstream/develop' into vmtrace
Update vm.cpp
Update vm.h
Paranoia mining fix.
Facility to check for ids.
Less tracing.
Merge branch 'poc-7' into develop
Version bump, minor fix for badly formatted manual hosts.