revert the huge performance regression in gbuild intoduced with 0a45deba2be4a77db7540bd050b25bd6c26d7513
revert the huge performance regression in gbuild intoduced with 0a45deba2be4a77db7540bd050b25bd6c26d7513

- we should default to make -r
- everything else grows exponentially with the number of targets
- gbuild should now have sane noop builds again even on make 3.82

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core