CREATEPROCESS_MANIFEST_RESOURCE_ID is a macro defined in winbase.h,
so we need an include to resolve that macro to its value, 1.

Without that it stays as a literal CREATEPROCESS_MANIFEST_RESOURCE_ID,
and ends up in the .exe file as-is, and Windows can't find it by that name,
resulting in UAC manifest not working and gtk-update-icon-cache bringing
up UAC prompt.