We need to prototype _start() as well, as we use it to test if we're running from flash or from RAM.
We need to prototype _start() as well, as we use it to test if we're running
from flash or from RAM.

Reported by:	imp
MFC After:	3 days

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase