a59c55c188
Running "mcexec dfsafds" did not print any message in normal use. Rather than looking for which message shows in debug and turn in into eprintf, add a single coherent message (more shell-like) at the end and turn other messages off. There is a small loss of information but this is equivalent to what shells give (a single errno value with no details), and it is now easy to add --debug to mcexec to see more information if required Change-Id: Id2c3a47880b7d1d7467883351e6e7af561f91bbf