Clean up for release

• fixed clang warnings after !335 (merged)
• fixed gcc7 warnings

• [2017-07-30 11:21] Validation started with lhcb-gaudi-merge#179

added 3 commits

• daa4abe2 - Fixed clang warnings after !335 (merged)
• a2995fee - Fixed gcc 7 warnings
• 36753d8d - Fixed clang warnings after !373 (merged)

Compare with previous version

approved this merge request

merged

mentioned in commit 3132f11c