Commit hash is stored in an automatically generated header file.
Hardening against bad RLP.
Merge branch 'release-poc-3' into develop

Conflicts:
	libethereum/Common.h
Merge pull request #86 from CodeShark/build_info_h

Commit hash is stored in an automatically generated header file.
TODO.
Better ignoring.
Merge branch 'develop' into quickgui
Tidy up BuildInfo.h
Merge branch 'develop' into quickgui
Use BuildInfo.h