code clean up for XC16
- PIC24FJ128GA202 has been added to the ISIS
- add pic24_lib to the project, and try use this, but unfortunately the generated code size is over the 128kB, thus the AWS project CANNOT be placed into 16bit architect uP with 128kB program memory
- try to compile the project with PIC24HJ256GP206 uP. The used Program memory is ~51%, data memory unknown due to some other problems. But this shows AWS should stay on PIC18F27J13 uP.