Use 5.3.latest on Travis to fix the build errors
Use 5.3.latest on Travis to fix the build errors

5.3.3 doesn't have ext/openssl ...

Also, allow failures on 5.3

Bluewind/filebin,DiederikLascaris/CodeIgniter,ganiutomo/CodeIgniter,titounnes/CI_BaseConfig,b1tc0re/CodeIgniter,Calico90/CodeIgniter,b1tc0re/CodeIgniter,ET-NiK/CodeIgniter,ivantcholakov/CodeIgniter,gt945/CodeIgniter,Sproypef/CodeIgniter_AdminLTE2_Blade,dhayalram123/CodeIgniter,moon-siama/codeigniter,bcit-ci/CodeIgniter,bcit-ci/CodeIgniter,openset/ci,andersonunsonst/CodeIgniter,ster/CodeIgniter,ytetsuro/CodeIgniter,kala725/CodeIgniter-with-React,poing/CodeIgniter,AndreiMariusSili/Enactus,marimarluna/CodeIgniter-develop,jim-parry/CodeIgniter,invitecomm/CodeIgniter,madwings/InsaneDB,n054/CodeIgniter,ET-NiK/CodeIgniter,dhayalram123/CodeIgniter,titounnes/CI_BaseConfig,tianhe1986/CodeIgniter,moon-siama/codeigniter,ganiutomo/CodeIgniter,b1tc0re/CodeIgniter,AndreiMariusSili/EnactusMVC,HindrikDeelstra/codeigniter-snackapp,ET-NiK/CodeIgniter,madwings/InsaneDB,butane/CodeIgniter,n054/CodeIgniter,KeiroD/CodeIgniter,asmdigital/CodeIgniter,ipabz/CodeIgniter,kamaslau/BasicCodeIgniter,openset/ci,butane/CodeIgniter,marimarluna/CodeIgniter-develop,invitecomm/CodeIgniter,weslenam/kymera,ster/CodeIgniter,titounnes/CI_BaseConfig,Sproypef/CodeIgniter_AdminLTE2_Blade,ytetsuro/CodeIgniter,ster/CodeIgniter,madwings/InsaneDB,poing/CodeIgniter,Husseinat/engsoft,ipabz/CodeIgniter,ivantcholakov/CodeIgniter,netsan/CodeIgniter-Research,it-can/CodeIgniter,Sproypef/CodeIgniter_AdminLTE2_Blade,KmServer/CodeIgniter,ivantcholakov/CodeIgniter,gt945/CodeIgniter,skullJ/CodeIgniter,ster/CodeIgniter,DiederikLascaris/CodeIgniter,andersonunsonst/CodeIgniter,skullJ/CodeIgniter,Calico90/CodeIgniter,it-can/CodeIgniter,n054/CodeIgniter,it-can/CodeIgniter,zares85/mvf,asmdigital/CodeIgniter,jim-parry/CodeIgniter,KmServer/CodeIgniter,gastongr/CodeIgniter,HindrikDeelstra/codeigniter-snackapp,AndreiMariusSili/EnactusMVC,madwings/InsaneDB,ganiutomo/CodeIgniter,butane/CodeIgniter,titounnes/CI_BaseConfig,DiederikLascaris/CodeIgniter,gastongr/CodeIgniter,madwings/InsaneDB,KeiroD/CodeIgniter,marimarluna/CodeIgniter-develop,netsan/CodeIgniter-Research,HindrikDeelstra/codeigniter-snackapp,ivantcholakov/CodeIgniter,AndreiMariusSili/Enactus,tianhe1986/CodeIgniter,marimarluna/CodeIgniter-develop,dhayalram123/CodeIgniter,ganiutomo/CodeIgniter,AndreiMariusSili/EnactusMVC,KeiroD/CodeIgniter,Bluewind/filebin,andersonunsonst/CodeIgniter,poing/CodeIgniter,ET-NiK/CodeIgniter,tianhe1986/CodeIgniter,marimarluna/CodeIgniter-develop,weslenam/kymera,bcit-ci/CodeIgniter,b1tc0re/CodeIgniter,ytetsuro/CodeIgniter,gt945/CodeIgniter,gastongr/CodeIgniter,b1tc0re/CodeIgniter,Tpojka/CodeIgniter,zares85/mvf,butane/CodeIgniter,jim-parry/CodeIgniter,Husseinat/engsoft,weslenam/kymera,Tpojka/CodeIgniter,smallp/CodeIgniter,ipabz/CodeIgniter,kala725/CodeIgniter-with-React,openset/ci,gastongr/CodeIgniter,kala725/CodeIgniter-with-React,KmServer/CodeIgniter,it-can/CodeIgniter,invitecomm/CodeIgniter,Bluewind/filebin,butane/CodeIgniter,weslenam/kymera,openset/ci,weslenam/kymera,titounnes/CI_BaseConfig,asmdigital/CodeIgniter,HindrikDeelstra/codeigniter-snackapp,Tpojka/CodeIgniter,openset/ci,KmServer/CodeIgniter,netsan/CodeIgniter-Research,DiederikLascaris/CodeIgniter,Bluewind/filebin,DiederikLascaris/CodeIgniter,kala725/CodeIgniter-with-React,poing/CodeIgniter,Calico90/CodeIgniter,moon-siama/codeigniter,poing/CodeIgniter,ipabz/CodeIgniter,kamaslau/BasicCodeIgniter,tianhe1986/CodeIgniter,invitecomm/CodeIgniter,ET-NiK/CodeIgniter,Bluewind/filebin,AndreiMariusSili/Enactus,Tpojka/CodeIgniter,smallp/CodeIgniter,n054/CodeIgniter,jim-parry/CodeIgniter,Sproypef/CodeIgniter_AdminLTE2_Blade,ytetsuro/CodeIgniter,n054/CodeIgniter,gastongr/CodeIgniter,ganiutomo/CodeIgniter,ster/CodeIgniter,KeiroD/CodeIgniter,kamaslau/BasicCodeIgniter,skullJ/CodeIgniter,dhayalram123/CodeIgniter,kamaslau/BasicCodeIgniter,invitecomm/CodeIgniter,Calico90/CodeIgniter,asmdigital/CodeIgniter,Husseinat/engsoft,jim-parry/CodeIgniter,Husseinat/engsoft,ivantcholakov/CodeIgniter,bcit-ci/CodeIgniter,ipabz/CodeIgniter,asmdigital/CodeIgniter,bcit-ci/CodeIgniter,Husseinat/engsoft,tianhe1986/CodeIgniter,KeiroD/CodeIgniter,Calico90/CodeIgniter,andersonunsonst/CodeIgniter,it-can/CodeIgniter,HindrikDeelstra/codeigniter-snackapp,Tpojka/CodeIgniter,kala725/CodeIgniter-with-React,ytetsuro/CodeIgniter