revamp module init: no more atexit and "premain" init => no longer need
to call any wstartup init function. winit section names now use group
numbers instead of letters.
delay_load -> wdll_delay_load
dll_ver -> wdll_ver
add aken build environment
cleanup wsock.cpp, have it import its functions properly
wsdl: defend against GameSetup calling SDL_Quit twice.
This was SVN commit r5108.
