timestamp datatype fixes. complete misc TODOs

DecaRanging.coproj

src/application/application_definitions.h

src/application/dw_main.c

src/application/instance.c

src/application/instance.h

src/application/instance_common.c

src/application/tdma_handler.c

src/application/tdma_handler.h

src/decadriver/deca_device.c

src/decadriver/deca_regs.h

src/platform/port.c

src/platform/port.h