The argument putEndl has been removed from Message_Messenger::Send() and Message_Printer::Send() methods.
Message_Printer interface has been changed, so that sub-classes have to implement new method
Message_Printer::send() accepting TCollection_AsciiString.
Old three Message_Printer::Send() methods remain available without putEndl argument
and redirecting to new send() method by default.
Removed dummy Message_PrinterOStream::GetUseUtf8() property.
Message_PrinterOStream, Message_PrinterSystemLog and Draw_Printer
now implement single method Message_Printer::send() instead of triplet.
