- Add corresponding methods at Path class to allow paths with 16-bit long attribute id's.
- Add corresponding methods at Session class to allow paths with 16-bit long attribute id's.
- Tested successfully with an Ethernet/IP adapter device with attributes id's greater than 255.
Main reference:
- "CIP Common Specification" Volume1, Release 1.0. ControlNet International and Open DeviceNet Vendor Association. June 2001 (Appendix C, page C-7)

- Follows the work from previous commit to allow attribute id's with 16 bits
- Add corresponding methods at Session class to allow paths with 16-bit long attribute id's.
- Not yet tested with a device.
Main reference:
- "CIP Common Specification" Volume1, Release 1.0. ControlNet International and Open DeviceNet Vendor Association. June 2001 (Appendix C, page C-7)

…int()) by overloading the operator << to a given ostream.