Minor improvements for exitStatus and returncode
Minor improvements for exitStatus and returncode

jrobeson/platformio,eiginn/platformio,jrobeson/platformio,ZachMassia/platformio,mplewis/platformio,atyenoria/platformio,mcanthony/platformio,jrobeson/platformio,platformio/platformio-core,valeros/platformio,mseroczynski/platformio,platformio/platformio-core,dkuku/platformio,jrobeson/platformio,platformio/platformio