Don't enable BFD if libiberty is not installed
Don't enable BFD if libiberty is not installed

ocelot-inc/tarantool,guard163/tarantool,condor-the-bird/tarantool,Sannis/tarantool,dkorolev/tarantool,dkorolev/tarantool,condor-the-bird/tarantool,vasilenkomike/tarantool,guard163/tarantool,rtsisyk/tarantool,rtsisyk/tarantool,condor-the-bird/tarantool,mejedi/tarantool,mejedi/tarantool,mejedi/tarantool,Sannis/tarantool,dkorolev/tarantool,nvoron23/tarantool,nvoron23/tarantool,KlonD90/tarantool,nvoron23/tarantool,nvoron23/tarantool,KlonD90/tarantool,mejedi/tarantool,vasilenkomike/tarantool,condor-the-bird/tarantool,KlonD90/tarantool,KlonD90/tarantool,Sannis/tarantool,dkorolev/tarantool,nvoron23/tarantool,guard163/tarantool,guard163/tarantool,rtsisyk/tarantool,rtsisyk/tarantool,vasilenkomike/tarantool,guard163/tarantool,Sannis/tarantool,ocelot-inc/tarantool,condor-the-bird/tarantool,vasilenkomike/tarantool,vasilenkomike/tarantool,ocelot-inc/tarantool,Sannis/tarantool,dkorolev/tarantool,ocelot-inc/tarantool,KlonD90/tarantool,nvoron23/tarantool