the __main symbol in the crt0_x.S

[Guanghui, Cheng]

Hello:
	I checked the crt0_x.S in the crtx package and find something interesting. In 
the crt0_x.S the main function is named __main() but not main() normally.
	But in the normal function we still use main() but not main() i want to know 
where to address with the symbol __main() by the address of main() in the 
real application.
	I look around the crtx package, mk directory and libgendep.so unluckily i 
don't find it.
	thanks a lot.
								Cheng Guanghui