dist/tools/toolchains: use MD5 as environment variable
dist/tools/toolchains: use MD5 as environment variable

ant9000/RIOT,thomaseichinger/RIOT,josephnoir/RIOT,roberthartung/RIOT,LudwigKnuepfer/RIOT,cladmi/RIOT,miri64/RIOT,beurdouche/RIOT,lazytech-org/RIOT,hamilton-mote/RIOT-OS,aeneby/RIOT,neiljay/RIOT,Hyungsin/RIOT-OS,OTAkeys/RIOT,smlng/RIOT,cladmi/RIOT,ks156/RIOT,LudwigKnuepfer/RIOT,smlng/RIOT,thomaseichinger/RIOT,mfrey/RIOT,kaspar030/RIOT,toonst/RIOT,avmelnikoff/RIOT,beurdouche/RIOT,kbumsik/RIOT,neumodisch/RIOT,neumodisch/RIOT,ks156/RIOT,neiljay/RIOT,aeneby/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,hamilton-mote/RIOT-OS,plushvoxel/RIOT,A-Paul/RIOT,neiljay/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,RIOT-OS/RIOT,ks156/RIOT,OTAkeys/RIOT,Josar/RIOT,neumodisch/RIOT,A-Paul/RIOT,Josar/RIOT,adrianghc/RIOT,thomaseichinger/RIOT,OlegHahm/RIOT,A-Paul/RIOT,yogo1212/RIOT,kerneltask/RIOT,jasonatran/RIOT,toonst/RIOT,neumodisch/RIOT,kaspar030/RIOT,plushvoxel/RIOT,authmillenon/RIOT,roberthartung/RIOT,mfrey/RIOT,OTAkeys/RIOT,immesys/RiSyn,plushvoxel/RIOT,neumodisch/RIOT,OlegHahm/RIOT,mfrey/RIOT,thomaseichinger/RIOT,kYc0o/RIOT,Josar/RIOT,jasonatran/RIOT,ant9000/RIOT,thomaseichinger/RIOT,dkm/RIOT,plushvoxel/RIOT,gautric/RIOT,aeneby/RIOT,x3ro/RIOT,ant9000/RIOT,LudwigOrtmann/RIOT,OTAkeys/RIOT,kaspar030/RIOT,immesys/RiSyn,kYc0o/RIOT,kaleb-himes/RIOT,OTAkeys/RIOT,gebart/RIOT,adjih/RIOT,LudwigOrtmann/RIOT,A-Paul/RIOT,OlegHahm/RIOT,adjih/RIOT,yogo1212/RIOT,RIOT-OS/RIOT,immesys/RiSyn,basilfx/RIOT,mtausig/RIOT,josephnoir/RIOT,gebart/RIOT,BytesGalore/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,adjih/RIOT,josephnoir/RIOT,rfuentess/RIOT,avmelnikoff/RIOT,adrianghc/RIOT,cladmi/RIOT,RIOT-OS/RIOT,Josar/RIOT,adjih/RIOT,smlng/RIOT,adrianghc/RIOT,plushvoxel/RIOT,toonst/RIOT,adrianghc/RIOT,gautric/RIOT,kaleb-himes/RIOT,beurdouche/RIOT,yogo1212/RIOT,dkm/RIOT,kYc0o/RIOT,gebart/RIOT,jfischer-phytec-iot/RIOT,BytesGalore/RIOT,ant9000/RIOT,lazytech-org/RIOT,lazytech-org/RIOT,immesys/RiSyn,adjih/RIOT,Ell-i/RIOT,Ell-i/RIOT,x3ro/RIOT,aeneby/RIOT,basilfx/RIOT,BytesGalore/RIOT,gebart/RIOT,roberthartung/RIOT,neiljay/RIOT,dailab/RIOT,OlegHahm/RIOT,Hyungsin/RIOT-OS,OlegHahm/RIOT,kaleb-himes/RIOT,miri64/RIOT,authmillenon/RIOT,biboc/RIOT,roberthartung/RIOT,yogo1212/RIOT,jfischer-phytec-iot/RIOT,authmillenon/RIOT,jasonatran/RIOT,ks156/RIOT,RIOT-OS/RIOT,lazytech-org/RIOT,Hyungsin/RIOT-OS,jfischer-phytec-iot/RIOT,gautric/RIOT,mfrey/RIOT,BytesGalore/RIOT,BytesGalore/RIOT,miri64/RIOT,mtausig/RIOT,neumodisch/RIOT,dailab/RIOT,kaspar030/RIOT,kaleb-himes/RIOT,jfischer-phytec-iot/RIOT,biboc/RIOT,immesys/RiSyn,Ell-i/RIOT,kbumsik/RIOT,toonst/RIOT,authmillenon/RIOT,lazytech-org/RIOT,A-Paul/RIOT,yogo1212/RIOT,beurdouche/RIOT,mtausig/RIOT,authmillenon/RIOT,kerneltask/RIOT,gautric/RIOT,Ell-i/RIOT,LudwigOrtmann/RIOT,rfuentess/RIOT,basilfx/RIOT,miri64/RIOT,LudwigOrtmann/RIOT,x3ro/RIOT,avmelnikoff/RIOT,kerneltask/RIOT,miri64/RIOT,hamilton-mote/RIOT-OS,dkm/RIOT,hamilton-mote/RIOT-OS,smlng/RIOT,kaspar030/RIOT,mfrey/RIOT,yogo1212/RIOT,biboc/RIOT,jasonatran/RIOT,biboc/RIOT,kerneltask/RIOT,immesys/RiSyn,kbumsik/RIOT,RIOT-OS/RIOT,aeneby/RIOT,mtausig/RIOT,mtausig/RIOT,adrianghc/RIOT,gebart/RIOT,LudwigOrtmann/RIOT,rfuentess/RIOT,dkm/RIOT,LudwigKnuepfer/RIOT,jfischer-phytec-iot/RIOT,Josar/RIOT,basilfx/RIOT,gautric/RIOT,x3ro/RIOT,neiljay/RIOT,avmelnikoff/RIOT,authmillenon/RIOT,josephnoir/RIOT,avmelnikoff/RIOT,LudwigKnuepfer/RIOT,Hyungsin/RIOT-OS,rfuentess/RIOT,Ell-i/RIOT,beurdouche/RIOT,dailab/RIOT,kerneltask/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,cladmi/RIOT,josephnoir/RIOT,Hyungsin/RIOT-OS,roberthartung/RIOT,hamilton-mote/RIOT-OS,toonst/RIOT,kbumsik/RIOT,kaleb-himes/RIOT,ks156/RIOT,rfuentess/RIOT,dailab/RIOT,biboc/RIOT,dkm/RIOT,jasonatran/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,kYc0o/RIOT,basilfx/RIOT,cladmi/RIOT,kYc0o/RIOT,smlng/RIOT,LudwigKnuepfer/RIOT,kbumsik/RIOT,ant9000/RIOT,dailab/RIOT,x3ro/RIOT,LudwigOrtmann/RIOT