Fixes #4302 allow COMPOSER env with config statements (overrides --file)
Fixes #4302 allow COMPOSER env with config statements (overrides --file)

stefangr/composer,Netmisa/composer,brighten01/composer,SpacePossum/composer,jtanjung/composer,milleruk/composer,gsdevme/composer,fabiang/composer,Soullivaneuh/composer,guillaumelecerf/composer,00F100/composer,dymissy/composer,kidaa/composer,GodLesZ/composer,cgvarela/composer,javihgil/composer,nater1067/composer,davidolrik/composer,staabm/composer,fabpot/composer,yaman-jain/composer,theiven70/composer,myPublicGit/composer,ryanaslett/composer,floverdevel/composer,balbuf/composer,erasys/composer,curry684/composer,mrmark/composer,yched/composer,marcuschia/composer,composer/composer,hirak/composer,blacksun/composer,Teino1978-Corp/Teino1978-Corp-composer,MoT3rror/composer,oligriffiths/composer,fh/composer,cesarmarinhorj/composer,DiceHoldingsInc/composer,bd808/composer,stof/composer,vdm-io/composer,localheinz/composer,olvlvl/composer,jreinke/composer,Risyandi/composer,johnstevenson/composer,supriyantomaftuh/composer,ncusoho/composer,naderman/composer,gencer/composer,nicolas-grekas/composer,ammmze/composer,zgj12306/composer,melvis01/composer,mikicaivosevic/composer,sroze/composer,JBleijenberg/composer,Nicofuma/composer,slbmeh/composer,pierredup/composer,dzuelke/composer,AndBicScadMedia/composer,Danack/composer,andrerom/composer,Seldaek/composer,remicollet/composer,yinhe007/composer,Zagorakiss/composer,druid628/composer,thetaxman/composer,nevvermind/composer,till/composer,alcohol/composer,phansys/composer