val imager_build_script_src :
bootstrap_arch:B0_std.Os.Arch.t ->imager_arch:B0_std.Os.Arch.t ->string option
imager_build_script_src ~bootstrap_arch ~imager_arch is the .cmd build script source for running on bootstrap_arch that generates the imager image of architecture imager_arch
val base_src : string
base_src is the source of the base WinVOS plan of telvm.