Change named capture group syntax.
Change named capture group syntax.

This increases compatibility with really old version of
PCRE used on CentOS.

Refs #GH-681

et304383/passbolt_api,tenkoma/cakephp,burriko/cakephp,ADmad/cakephp,pbaire/cakephp,khoimt/cakephp-study,garethellis36/cakephp,jeffblack360/cakephp,petteyg/cakephp,gmponos/cakephp,et304383/passbolt_api,et304383/passbolt_api,et304383/passbolt_api,CakeDC/cakephp,mvdriel/cakephp,tenkoma/cakephp,HavokInspiration/cakephp,davidyell/cakephp,ndm2/cakephp,eboominathan/cakephp,dkarvounaris/cakephp,cakephp-fr/cakephp,erikfig/cakephp,Balachan27/cakephp,khoimt/cakephp-study,ionas/cakephp,ionas/cakephp,tgr0ss/cakephp,ionas/cakephp,elboletaire/cakephp,cakephp/cakephp,khoimt/cakephp-study,jerems02/cakephp,kumamidori/cakephp,erikfig/cakephp,eboominathan/cakephp,akintoey/cakephp,tgr0ss/cakephp,cakephp/cakephp,Phillaf/cakephp,dakota/cakephp,thinkingmedia/cakephp,tenkoma/cakephp,web-player/cakephp,elboletaire/cakephp,eryw/cakephp,ADmad/cakephp,garethellis36/cakephp,berrygoudswaard/cakephp,elboletaire/cakephp,mvdriel/cakephp,berrygoudswaard/cakephp,ADmad/cakephp,michaelze/cakephp,ndm2/cakephp,davidyell/cakephp,michaelze/cakephp,jjj117/cakephp,thinkingmedia/cakephp,timhoeppner/cakephp,jjj117/cakephp,bravo-kernel/cakephp,gmponos/cakephp,web-player/cakephp,justinyost/cakephp,dakota/cakephp,yinhe007/cakephp,jjj117/cakephp,mvdriel/cakephp,CakeDC/cakephp,CVO-Technologies/cakephp,yinhe007/cakephp,petteyg/cakephp,garethellis36/cakephp,et304383/passbolt_api,cakephp/cakephp,bravo-kernel/cakephp,eryw/cakephp,dakota/cakephp,CVO-Technologies/cakephp,timhoeppner/cakephp,Phillaf/cakephp,cakephp/cakephp,ndm2/cakephp,tisu2tisu/cakephp,HavokInspiration/cakephp,Balachan27/cakephp,thinkingmedia/cakephp,pbaire/cakephp,akintoey/cakephp,adopico/cakephp,burriko/cakephp,davidyell/cakephp,adopico/cakephp,HavokInspiration/cakephp,ndm2/cakephp,michaelze/cakephp,jeffblack360/cakephp,garethellis36/cakephp,eryw/cakephp,tisu2tisu/cakephp,petteyg/cakephp,jeffblack360/cakephp,dkarvounaris/cakephp,tgr0ss/cakephp,berrygoudswaard/cakephp,ADmad/cakephp,nrother/cakephp,dkarvounaris/cakephp,adopico/cakephp,mvdriel/cakephp,web-player/cakephp,erikfig/cakephp,akintoey/cakephp,tisu2tisu/cakephp,dakota/cakephp,Balachan27/cakephp,CVO-Technologies/cakephp,tenkoma/cakephp,justinyost/cakephp,Phillaf/cakephp,CakeDC/cakephp,petteyg/cakephp,bravo-kernel/cakephp,justinyost/cakephp,timhoeppner/cakephp,burriko/cakephp,cakephp-fr/cakephp,cakephp-fr/cakephp,kumamidori/cakephp,kumamidori/cakephp,CakeDC/cakephp,pbaire/cakephp,nrother/cakephp,eboominathan/cakephp,gmponos/cakephp,jerems02/cakephp,jerems02/cakephp,yinhe007/cakephp,nrother/cakephp