RFR: JDK-8066263 - Split UARTimpl and UARTModemImpl implementation in DIO realization

[Sergey Nazarkin]

NOT OK.  The changes are coming from fixes for different issues. Please, 
make correct merge of necessary code only

/Sergey

On 01.12.2014 18:02, alexey mironov wrote:
> issue: https://bugs.openjdk.java.net/browse/JDK-8066263 
> <https://bugs.openjdk.java.net/browse/JDK-8065776>
> webrev: http://cr.openjdk.java.net/~amironov/8066263/ 
> <https://bugs.openjdk.java.net/browse/JDK-8065776>
>
> Please review the changes made in order to split UART and UARTModem 
> implementations.
>
> Regards,
> Alexey