Problem solved: We can't use /NODEFAULTLIB:LIBCMT or we get the unresolved external __HUGE, that requires a Harbour built using this compiler flag /MD: http://social.msdn.microsoft.com/Forums/vstudio/en-US/2c526d90-fbd3-40c1-89b4-1e35ca521818/dll-with-static-lib-dependency ...
Problema solucionado: No podemos usar /NODEFAULTLIB:LIBCMT ó nos encontramos con la referencia externa __HUGE no solucionada, que requiere construir Harbour con este flag de compilación /MD: http://social.msdn.microsoft.com/Forums/vstudio/en-US/2c526d90-fbd3-40c1-89b4-1e35ca521818/dll-with-static-lib-dependency ...
Este flag es necesario para eliminar un warning: /NODEFAULTLIB:LIBCMT (no está incluido en el fichero que he proporcionado. Ya iré proporcionando versiones actualizadas)
This flag is required to avoid a linker warning: /NODEFAULTLIB:LIBCMT (it is not included in the project that I have provided. I will be providing updated versions of it)
... and link script to build fine my exe using multiple res file with MSVC2010 LINK @mvc.tmp /subsystem:windows /nologo /FORCE:MULTIPLE /ignore:4006 /NODEFAULTLIB:libc /OUT:"C:\ProyectosFW\Sql_Control\Bin\ControlesHm.EXE" "C:\fuentes\fwhx\sqlcontrol\obj\controles.obj" "C:\fuentes\fwhx\sqlcontrol\obj\GestionReportes.obj" ...