minor #21915 [travis] Disable HHVM JIT - makes tests twice as fast (nicolas-grekas)
minor #21915 [travis] Disable HHVM JIT - makes tests twice as fast (nicolas-grekas)

This PR was merged into the 2.7 branch.

Discussion
----------

[travis] Disable HHVM JIT - makes tests twice as fast

| Q             | A
| ------------- | ---
| Branch?       | 2.7
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

Commits
-------

0691639 [travis] Disable HHVM JIT - makes tests twice as fast

neemzy/symfony,phramz/symfony,jvasseur/symfony,hacfi/symfony,gonzalovilaseca/symfony,lyrixx/symfony,voronkovich/symfony,jakubsacha/symfony,mpdude/symfony,sgehrig/symfony,teohhanhui/symfony,sstok/symfony,Amo/symfony,codeclimate-testing/symfony,frankdejonge/symfony,shieldo/symfony,bendavies/symfony,frankdejonge/symfony,joelwurtz/symfony,deguif/symfony,docteurklein/symfony,Deamon/symfony,andrerom/symfony,hason/symfony,oleg-andreyev/symfony,sstok/symfony,yceruto/symfony,lyrixx/symfony,tgalopin/symfony,Strate/symfony,HeahDude/symfony,OskarStark/symfony,tucksaun/symfony,garak/symfony,andreia/symfony,jzawadzki/symfony,oleg-andreyev/symfony,teohhanhui/symfony,jakzal/symfony,aeoris/symfony,Simperfit/symfony,docteurklein/symfony,gonzalovilaseca/symfony,bendavies/symfony,gonzalovilaseca/symfony,hacfi/symfony,zorn-v/symfony,xabbuh/symfony,ro0NL/symfony,mweimerskirch/symfony,gimler/symfony,smatyas/symfony,aeoris/symfony,mihai-stancu/symfony,Koc/symfony,1ed/symfony,d-ph/symfony,hason/symfony,jderusse/symfony,alekitto/symfony,fabpot/symfony,curry684/symfony,Einenlum/symfony,sroze/symfony,zorn-v/symfony,yceruto/symfony,paradajozsef/symfony,sstok/symfony,neemzy/symfony,weaverryan/symfony,stof/symfony,symfony/symfony,symfony/symfony,Engerim/symfony,dunglas/symfony,Koc/symfony,sgehrig/symfony,nasimnabavi/symfony,arjenm/symfony,shieldo/symfony,klandaika/symfony,stof/symfony,damienalexandre/symfony,garak/symfony,localheinz/symfony,nicolas-grekas/symfony,romaricdrigon/symfony,jzawadzki/symfony,xabbuh/symfony,OndraM/symfony,ajgarlag/symfony,sgehrig/symfony,shieldo/symfony,okdana/symfony,mihai-stancu/symfony,gnat42/symfony,c960657/symfony,localheinz/symfony,dmaicher/symfony,josephdpurcell/symfony,alekitto/symfony,jderusse/symfony,inso/symfony,dmaicher/symfony,Triiistan/symfony,klandaika/symfony,inso/symfony,tucksaun/symfony,derrabus/symfony,Deamon/symfony,pyrech/symfony,e-moe/symfony,mvhirsch/symfony,Slamdunk/symfony,jean-gui/symfony,pamil/symfony,nasimnabavi/symfony,mpdude/symfony,jderusse/symfony,ro0NL/symfony,voronkovich/symfony,smatyas/symfony,damienalexandre/symfony,dmaicher/symfony,c960657/symfony,romaricdrigon/symfony,DavidGarciaCat/symfony,fabpot/symfony,zerkms/symfony,lstrojny/symfony,gnat42/symfony,voronkovich/symfony,michaelperrin/symfony,inso/symfony,ajgarlag/symfony,gimler/symfony,mnapoli/symfony,Strate/symfony,kbond/symfony,stof/symfony,1ed/symfony,maidmaid/symfony,Koc/symfony,teohhanhui/symfony,SpacePossum/symfony,pierredup/symfony,mpdude/symfony,ro0NL/symfony,SaschaDens/symfony,SaschaDens/symfony,lepiaf/symfony,mnapoli/symfony,Soullivaneuh/symfony,tgalopin/symfony,chalasr/symfony,mnapoli/symfony,mweimerskirch/symfony,lepiaf/symfony,jakzal/symfony,vincentaubert/symfony,joelwurtz/symfony,pamil/symfony,dzuelke/symfony,pyrech/symfony,weaverryan/symfony,fabpot/symfony,MatTheCat/symfony,sgehrig/symfony,MatTheCat/symfony,codeclimate-testing/symfony,SpacePossum/symfony,Slamdunk/symfony,hason/symfony,curry684/symfony,tucksaun/symfony,ajgarlag/symfony,okdana/symfony,dmaicher/symfony,gencer/symfony,Tobion/symfony,HeahDude/symfony,1ed/symfony,nasimnabavi/symfony,joelwurtz/symfony,e-moe/symfony,1ed/symfony,lepiaf/symfony,inso/symfony,derrabus/symfony,WhiteEagle88/symfony,zcodes/symfony,garak/symfony,lstrojny/symfony,iltar/symfony,pierredup/symfony,curry684/symfony,jvasseur/symfony,okdana/symfony,Triiistan/symfony,apetitpa/symfony,andrerom/symfony,jvasseur/symfony,docteurklein/symfony,pamil/symfony,csarrazi/symfony,bendavies/symfony,mihai-stancu/symfony,josephdpurcell/symfony,damienalexandre/symfony,Einenlum/symfony,backbone87/symfony,pyrech/symfony,frankdejonge/symfony,pyrech/symfony,symfony/symfony,sroze/symfony,sstok/symfony,smatyas/symfony,deguif/symfony,Amo/symfony,iltar/symfony,OskarStark/symfony,e-moe/symfony,Simperfit/symfony,csarrazi/symfony,derrabus/symfony,mvhirsch/symfony,michaelperrin/symfony,neemzy/symfony,Deamon/symfony,oleg-andreyev/symfony,paradajozsef/symfony,dunglas/symfony,andreia/symfony,ro0NL/symfony,c960657/symfony,zerkms/symfony,chalasr/symfony,hhamon/symfony,tucksaun/symfony,ragboyjr/symfony,DavidGarciaCat/symfony,romaricdrigon/symfony,Einenlum/symfony,Deamon/symfony,josephdpurcell/symfony,zcodes/symfony,lyrixx/symfony,fabpot/symfony,tgalopin/symfony,Aliance/symfony,klandaika/symfony,gencer/symfony,kbond/symfony,gnat42/symfony,sroze/symfony,OskarStark/symfony,Tobion/symfony,WhiteEagle88/symfony,HeahDude/symfony,SpacePossum/symfony,docteurklein/symfony,Pierstoval/symfony,symfony/symfony,pierredup/symfony,apetitpa/symfony,gonzalovilaseca/symfony,paradajozsef/symfony,jderusse/symfony,andreia/symfony,inso/symfony,Simperfit/symfony,ragboyjr/symfony,Soullivaneuh/symfony,sstok/symfony,garak/symfony,d-ph/symfony,nicolas-grekas/symfony,ragboyjr/symfony,jean-gui/symfony,pierredup/symfony,Aliance/symfony,mnapoli/symfony,alekitto/symfony,jakzal/symfony,mihai-stancu/symfony,tgalopin/symfony,ogizanagi/symfony,localheinz/symfony,smatyas/symfony,hhamon/symfony,mvhirsch/symfony,weaverryan/symfony,gencer/symfony,frankdejonge/symfony,phramz/symfony,dzuelke/symfony,klandaika/symfony,alekitto/symfony,Simperfit/symfony,kbond/symfony,gimler/symfony,zcodes/symfony,SaschaDens/symfony,Strate/symfony,MatTheCat/symfony,vincentaubert/symfony,hhamon/symfony,yceruto/symfony,mweimerskirch/symfony,iltar/symfony,codeclimate-testing/symfony,DavidGarciaCat/symfony,Amo/symfony,c960657/symfony,dzuelke/symfony,gnat42/symfony,pamil/symfony,jean-gui/symfony,jvasseur/symfony,voronkovich/symfony,mnapoli/symfony,Triiistan/symfony,zorn-v/symfony,mpdude/symfony,andrerom/symfony,Nyholm/symfony,weaverryan/symfony,lyrixx/symfony,curry684/symfony,mvhirsch/symfony,jakubsacha/symfony,Amo/symfony,phramz/symfony,mihai-stancu/symfony,oleg-andreyev/symfony,jakzal/symfony,ogizanagi/symfony,joelwurtz/symfony,hhamon/symfony,csarrazi/symfony,Triiistan/symfony,nicolas-grekas/symfony,jean-gui/symfony,Pierstoval/symfony,mvhirsch/symfony,zerkms/symfony,Koc/symfony,mweimerskirch/symfony,OndraM/symfony,ogizanagi/symfony,Pierstoval/symfony,d-ph/symfony,aeoris/symfony,shieldo/symfony,smatyas/symfony,Taluu/symfony,xabbuh/symfony,dunglas/symfony,jakubsacha/symfony,zorn-v/symfony,jzawadzki/symfony,Taluu/symfony,Soullivaneuh/symfony,maidmaid/symfony,SaschaDens/symfony,OndraM/symfony,SpacePossum/symfony,Slamdunk/symfony,WhiteEagle88/symfony,zerkms/symfony,Aliance/symfony,nasimnabavi/symfony,maidmaid/symfony,vincentaubert/symfony,ogizanagi/symfony,dzuelke/symfony,michaelperrin/symfony,lstrojny/symfony,Tobion/symfony,bendavies/symfony,dzuelke/symfony,Nyholm/symfony,Nyholm/symfony,e-moe/symfony,SaschaDens/symfony,docteurklein/symfony,Engerim/symfony,yceruto/symfony,arjenm/symfony,Pierstoval/symfony,andrerom/symfony,sroze/symfony,deguif/symfony,zcodes/symfony,andreia/symfony,MatTheCat/symfony,Engerim/symfony,mweimerskirch/symfony,xabbuh/symfony,d-ph/symfony,michaelperrin/symfony,OskarStark/symfony,Tobion/symfony,HeahDude/symfony,deguif/symfony,jakubsacha/symfony,backbone87/symfony,codeclimate-testing/symfony,klandaika/symfony,backbone87/symfony,OndraM/symfony,Taluu/symfony,apetitpa/symfony,OndraM/symfony,derrabus/symfony,chalasr/symfony,hacfi/symfony,Deamon/symfony,Simperfit/symfony,Slamdunk/symfony,chalasr/symfony,Triiistan/symfony,vincentaubert/symfony,arjenm/symfony,stof/symfony,localheinz/symfony,paradajozsef/symfony,nicolas-grekas/symfony,SpacePossum/symfony,Amo/symfony,jakubsacha/symfony,phramz/symfony,Nyholm/symfony,damienalexandre/symfony,Einenlum/symfony,ragboyjr/symfony,teohhanhui/symfony,Soullivaneuh/symfony,maidmaid/symfony,Taluu/symfony,romaricdrigon/symfony,ajgarlag/symfony,gimler/symfony,iltar/symfony,apetitpa/symfony,arjenm/symfony,Soullivaneuh/symfony,kbond/symfony