Use srcbuiltins.PrintWarning in _bootstrap.py, so verbose mode always works correctly. Also fix startup crash with verbose mode (problem with redirecting to sys.stderr?).
Minor change.
Start making changes for replacing Python network usermessages to use steam p2p networking instead.
Fix old pyc files potentially being used because of incorrect file time stamps. Due this it would only rely on the file size. Down-side is that it will now always rebuild the pyc/pyo file.