bin/vendors: detect repo url change
bin/vendors: detect repo url change

For performance, our continuous integration server runs "bin/vendors update" instead of "bin/vendors install". This patch allows the script to detect a repo url change in "deps", e.g., switching from an upstream repo to a fork, or vice-versa.

proteichik/testApp,tdd-php/angaze,FLM/uberstrap,yelmontaser/symfony-standard,mattvaadi/hris,theodo/theodo-kata,merk/comment-server,wachterjohannes/sulu-standard,taylankasap/symfony-standard,Cartesia/01,bshaffer/symfony-standard,tdd-php/angaze,webignition/worker.simplytestable.com,aerrasti/iemedebe,WouterJ/symfony-standard,mukulu/hris,reidel/hobby-1,oustaban/eurotax,stof/symfony-standard,hrisproject/hris,tiagobrito/ds1.sfdaypt14,WouterJ/symfony-standard,zanderbaldwin/symfony-layers,yhoiseth/notelite.net,shadowtje1990/symfony_todo_api,egeloen/symfony-standard,micha149/wedding-page,tederkkila/snapshot_server,taylankasap/symfony-standard,spolischook/standard-edition,mukulu/hris,unewochialat/symfony-standard,tarasinio/weather-remainder.com,joferzs/firewall,simonjcarr/symfony_rest,bionic-university/alexander-pobereznichenko,twisted-socket/stage-plots,jakzal/symfony-standard,buddhika-jay/symfony-sonata-distribution,fabpot/symfony-standard,symfony/symfony-standard,by-examples/symfony-standard,mattvaadi/hris,tPl0ch/symfony-phpqatools,gencer/symfony-standard,VolCh/test-rethis.ru,delorenj/elleol_legacy,tristanbes/symfony-standard,gimler/symfony-rest-edition,Thiktak/Jordo,SymfonyId/Skeleton,ctrl-f5/symfony-standard,foopro/symfony-screenfony,ovelasquez/ussi,vincentchalamon/phpunit-bridge,cordoval/symfony-gae,Baachi/symfony-standard,stof/symfony-standard,amalv/cupon,Soullivaneuh/symfony-standard,VolCh/test-rethis.ru,ucsf-ckm/symfony-emberjs-edition,baukaman/NeedYou,1ed/symfony-standard,Koc/symfony-standard,drufony/drufony,phiamo/symfony-bootstrap,flevour/symfony-issue-3889,mqmtech/show-app,damedia/culture.ru,phospr/symfony-starter,papaavola/symfony-standard,black-project/black-standard,mnapoli/symfony-standard,havvg/symfony-standard-propel,sulu-io/sulu-standard,AlexeyKupershtokh/symfony-standard,buddhikajay/symfony-sonata-distribution,checat/symfony-minimal,lukaszgi/operowo,den2134/itdTest,IgorTimoshenko/symfony-standard-requirejs,joferzs/firewall,IgorTimoshenko/symfony-standard-requirejs,irro/MastoAlliance,mweimerskirch/symfony-standard,vincentaubert/symfony-standard,webignition/app.simplytestable.com,bocharsky-bw/symfony-standard,phiamo/symfony-bootstrap,beyondkeysystem/psc-symfony-angularjs,WolfMicrosystems/symfony-wms,micha149/wedding-page,ybutb/videotask,irro/MastoAlliance,meonkeys/symfony2-dual-auth,unewochialat/symfony-standard,webignition/app.simplytestable.com,lyrixx/symfony-standard,csarrazi/AppKernelGenerator,umpirsky/symfony-standard,yelmontaser/symfony-standard,merk/Citadel,rainbowcode/spanvoice-standard,havvg/symfony-propel-edition,tomat/symfony-standard,debruyne0/symfony,dunglas/symfony-standard,Knouki/Jobeet-Symfony,zanderbaldwin/symfony-layers,npotier/sf2Showcase,orodsem/trout,GulDmitry/music-diff,tdd-php/literatura,mweimerskirch/symfony-standard,JMSBot/CSBill,liip-forks/symfony-standard,continuousphp/symfony-skeleton,kmelia/fresh-symfony,apnet/symfony-standard-edition,outlandishideas/symfony-standard,the-software-factory/superhero-api,liip-forks/symfony-standard,spolischook/standard-edition,mkrauser/symfony-dump-demo,jbdelhommeau/symfony-standard,lyrixx/symfony-rest-edition,phiamo/symfony-bootstrap,pocit/ExpoApiBundle,damienalexandre/symfony-standard,JMSBot/CSBill,marcoleong/musictube,Spea/symfony-standard,hrisproject/hris,dantleech/symfony-doctrine-phpcr-edition,cordoval/spike-edition,singingstars/flydb,rommsen/plesynd,dziamid/lunch-time-composer,OskarStark/symfony-standard,Cartesia/01,fcerezo/famaluz,Rvanlaak/symfony-standard,hrisproject/hris,symfony2-od-podstaw/knp-menu-example,we-bridge/symfony-admin,webignition/worker.simplytestable.com,chregu/symfony-standard,Metabor/Start-App,rajkamalganeshvivid/symfony-standard,continuousphp/symfony-skeleton,webignition/worker.simplytestable.com,NoUseFreak/StandardEdition,baukaman/NeedYou,GulDmitry/music-diff,fahadonline/sulu,isidromerayo/symfony2-jobeet,Soullivaneuh/symfony-standard,cordoval/demo-symfony2-argentina,jbdelhommeau/symfony-standard,bocharsky-bw/symfony-standard,egeloen/symfony-standard,Spea/symfony-standard,jmather/pagoda-symfony-sonata-distribution,tiagobrito/ds1.sfdaypt14,chebetos/SymfonyTest,tdd-php/angaze,jakzal/symfony-standard,damedia/culture.ru,tarasinio/weather-remainder.com,alihalabyah/symfony-rest-edition,vincentaubert/symfony-standard,benja-M-1/rogercms-sandbox,dkarvounaris/symfony-standard,lukaszgi/operowo,Clastic/StandardEdition,black-project/black-standard,symfony-cmf/standard-edition,Cartesia/01,symfony-cmf/standard-edition,flevour/symfony-issue-3889,ucay/Skeleton,Musak/firstsymfony2project,webignition/worker.simplytestable.com,Tobion/symfony-standard,continuousphp/symfony-skeleton,webignition/simplytestable.com,shcloudservices/agiletourreg,yohang/non-obstrusive-form-sf2,flyboarder/AirOS,the-software-factory/superhero-api,b00giZm/symfony-boilerplate-app,lyrixx/symfony-standard,myroshnychenko/SymfonyCMF,peterkokot/symfony-standard,lmaslowski/sf2,InkApplications/barenaked-symfony,NoUseFreak/StandardEdition,xabbuh/symfony-standard,bshaffer/symfony-standard,glavweb/symfony-standard,shadowtje1990/symfony_todo_api,symfony2-od-podstaw/26-01-sf21,buddhikajay/symfony-sonata-distribution,ericclemmons/ericclemmons.github.io,tederkkila/snapshot_server,ewgRa/symfony-standard,phiamo/symfony-bootstrap,simonjcarr/symfony_rest,webmozart/symfony-standard,wachterjohannes/sulu-standard,shamcode/symfony-testing,tarasinio/weather-remainder.com,dunglas/symfony-standard,den2134/itdTest,rommsen/plesynd,pjcdawkins/tmp-symfony-demo,delorenj/elleol_legacy,aprezcuba24/symfony-standard,javiereguiluz/symfony-standard,Thiktak/Jordo,theodo/theodo-kata,xiaobudongzhang/symfony-standard,SymfonyId/Skeleton,Musak/firstsymfony2project,ovelasquez/ussi,JMSBot/CSBill,platformsh/platformsh-example-symfony,mykehsd/jobeet,trsteel88/symfony-standard,umpirsky/symfony-standard,HasClass0/standard-edition,Ocramius/symfony-standard,shamcode/symfony-testing,sulu-io/sulu-standard,skafandri/blog,ewgRa/symfony-standard,webignition/worker.simplytestable.com,cordoval/symfony-bootstrap,lanthaler/sfHydraDemoApp,tdd-php/football,propelorm/symfony-propel-edition,RuntyCybin/symfony-standard,chebetos/SymfonyTest,platformsh/platformsh-example-symfony,HumanBooster/Symfony,yohang/non-obstrusive-form-sf2,cordoval/symfony-gae,foopro/symfony-screenfony,NoUseFreak/StandardEdition,sandello-alkr/symfony,hrisproject/hris,MatthieuCutin/ligue-squash,oustaban/eurotax,GulDmitry/music-diff,adrienbrault/symfony-silex-edition,orodsem/trout,markitosgv/DevOps,ctrl-f5/symfony-standard,freecastle/Symfony2_Boilerplate,2085020/first-symfony-project,symfony/symfony-standard,hrisproject/hris,OskarStark/symfony-standard,uttam-vi/pardawala,Clastic/StandardEdition,proteichik/testApp,tdd-php/literatura,cordoval/symfony-gae,Thiktak/Jordo,fahadonline/sulu,alihalabyah/symfony-rest-edition,Chill-project/Standard,mhlavac/symfony-skeleton,Baachi/symfony-standard,b00giZm/symfony-boilerplate-app,uttam-vi/pardawala,papaavola/symfony-standard,merk/Citadel,chebetos/SymfonyTest,ovelasquez/ussi,phiamo/symfony-bootstrap,tristanbes/symfony-standard,joferzs/firewall,trsteel88/symfony-standard,VolCh/test-rethis.ru,mattvaadi/hris,gnugat-legacy/symfony-empty,elcodi/symfonycon-demo,javiereguiluz/symfony-standard,ybutb/videotask,oustaban/eurotax,apnet/symfony-standard-edition,underq/symfony-rest-edition-experiment,propelorm/symfony-propel-edition,yhoiseth/notelite.net,martinmike2/website-study,glavweb/symfony-standard,orodsem/trout,formapro-forks/api-basic,tdd-php/angaze,mqmtech/show-app,merk/comment-server,JMSBot/CSBill,flyboarder/AirOS,webignition/simplytestable.com,marcoleong/musictube,dkarvounaris/symfony-standard,continuousphp/symfony-skeleton,damedia/culture.ru,RuntyCybin/symfony-standard,formapro-forks/api-basic,shcloudservices/agiletourreg,Chill-project/Standard,wachterjohannes/sulu-standard,fcerezo/famaluz,cordoval/symfony-bootstrap,HasClass0/standard-edition,ucsf-ckm/symfony-emberjs-edition,gimler/symfony-rest-edition,kmelia/fresh-symfony,uttam-vi/pardawala,rajkamalganeshvivid/symfony-standard,micha149/wedding-page,debruyne0/symfony,ucay/Skeleton,achrafYne/restaurants-guide,shcloudservices/agiletourreg,MatthieuCutin/ligue-squash,ucay/Skeleton,fahadonline/sulu,lukaszgi/operowo,bamarni/symfony-docker,Clastic/StandardEdition,fduch/symfony-standard-workflow,xiaobudongzhang/symfony-standard,gencer/symfony-standard,mikekamornikov/remmart.ru,mukulu/hris,AlexeyKupershtokh/symfony-standard,meonkeys/symfony2-dual-auth,mayeco/symfony-standard-pagodabox,bamarni/symfony-docker,pjcdawkins/tmp-symfony-demo,mattvaadi/hris,fcerezo/famaluz,phiamo/symfony-bootstrap,tarasinio/weather-remainder.com,fahadonline/sulu,dziamid/lunch-time-composer,freecastle/Symfony2_Boilerplate,sulu-io/sulu-standard,SymfonyId/api-platform,JMSBot/CSBill,0mars/symfony-standard-issue-13291,twisted-socket/stage-plots,oustaban/eurotax,basdek/SymfonyFireWall,kosintwong/symfony_test,mykehsd/jobeet,lsmith77/symfony-standard,cordoval/symfony-bootstrap,tdd-php/football,yohang/non-obstrusive-form-sf2,Tobion/symfony-standard,b00giZm/symfony-boilerplate-app,skafandri/blog,jmather/symfony-sonata-distribution,dziamid/lunch-time-composer,havvg/symfony-standard-propel,fduch/symfony-standard-workflow,chrisciampoli/cleats,fabpot/symfony-standard,kmelia/fresh-symfony,havvg/symfony-propel-edition,basdek/SymfonyFireWall,kucherevskyA/kucherevskiy-test-task,phospr/symfony-starter,ericclemmons/ericclemmons.github.io,beyondkeysystem/psc-symfony-angularjs,locastic/psc-symfony-angularjs,makasim/LiipImagineBundleSandbox,UxorialRook/symfony-standard,vincentchalamon/phpunit-bridge,amalv/cupon,chebetos/SymfonyTest,jmather/pagoda-symfony-sonata-distribution,webignition/simplytestable.com,cordoval/symfony-bootstrap,damedia/culture.ru,WolfMicrosystems/symfony-wms,isidromerayo/symfony2-jobeet,UxorialRook/symfony-standard,gnugat/symfony-empty,mukulu/hris,damedia/culture.ru,aerrasti/iemedebe,buddhika-jay/symfony-sonata-distribution,GulDmitry/music-diff,apnet/symfony-standard-edition