Fix test_phpvars.aug as per using Util.empty_c_style
Fix test_phpvars.aug as per using Util.empty_c_style

hercules-team/augeas-do-not-use,raphink/augeas,raphink/augeas,jjlin/augeas,domcleal/augeas,domcleal/augeas,GeoffWilliams/augeas,kumy/augeas,MikaelSmith/augeas,GeoffWilliams/augeas,lutter/augeas,jasperla/augeas,kunkku/augeas,ptoscano/augeas,dafugg/augeas,mlichvar/augeas,hercules-team/augeas,hercules-team/augeas,jjlin/augeas,pevalme/augeas,manandbytes/augeas,kumy/augeas,domcleal/augeas,dafugg/augeas,dafugg/augeas,kumy/augeas,manandbytes/augeas,MikaelSmith/augeas,kumy/augeas,pevalme/augeas,mlichvar/augeas,jtopjian/augeas,pevalme/augeas,lutter/augeas,kunkku/augeas,mlichvar/augeas,jtopjian/augeas,hercules-team/augeas-do-not-use,mchf/augeas,hercules-team/augeas-do-not-use,jjlin/augeas,lutter/augeas,kunkku/augeas,ptoscano/augeas,ptoscano/augeas,mchf/augeas,jasperla/augeas