Fix fatest linking with libfa
Fix fatest linking with libfa

fatest requires libfa symbols which are not exported by libaugeas library.

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