Give a better hint if git-p4 submit fails
Give a better hint if git-p4 submit fails

Signed-off-by: Simon Hausmann <557de780ea7e35794f4cd12cd1c79efe52f1d714@trolltech.com>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git