Improve robustness of runner scripts
Improve robustness of runner scripts

No longer depend on executable bit being set or shebangs

blubrackets/codebox,nobutakaoshiro/codebox,etopian/codebox,CodeboxIDE/codebox,rajthilakmca/codebox,fly19890211/codebox,fly19890211/codebox,quietdog/codebox,indykish/codebox,kustomzone/codebox,Ckai1991/codebox,ahmadassaf/Codebox,listepo/codebox,lcamilo15/codebox,nobutakaoshiro/codebox,CodeboxIDE/codebox,Ckai1991/codebox,rodrigues-daniel/codebox,LogeshEswar/codebox,kustomzone/codebox,indykish/codebox,quietdog/codebox,etopian/codebox,blubrackets/codebox,smallbal/codebox,ahmadassaf/Codebox,LogeshEswar/codebox,lcamilo15/codebox,rodrigues-daniel/codebox,ronoaldo/codebox,code-box/codebox,rajthilakmca/codebox,listepo/codebox,smallbal/codebox,ronoaldo/codebox,code-box/codebox