Adjust the format of information printed.
Print out more necessary debug information.
Display error message in STDERR and make it more readable.
Signed-off-by: Yicheng Qin <yichengq@google.com>
Acked-by: Andrew Vagin <avagin@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>