Fix issue 861: configure.sh fails on mac os x
Fix issue 861: configure.sh fails on mac os x

freebazaar/FreeBazaar,dionyziz/OpenBazaar,im0rtel/OpenBazaar,atsuyim/OpenBazaar,must-/OpenBazaar,must-/OpenBazaar,rllola/OpenBazaar,matiasbastos/OpenBazaar,freebazaar/FreeBazaar,STRML/OpenBazaar,saltduck/OpenBazaar,akhavr/OpenBazaar,STRML/OpenBazaar,akhavr/OpenBazaar,matiasbastos/OpenBazaar,dionyziz/OpenBazaar,im0rtel/OpenBazaar,matiasbastos/OpenBazaar,blakejakopovic/OpenBazaar,must-/OpenBazaar,atsuyim/OpenBazaar,bglassy/OpenBazaar,STRML/OpenBazaar,habibmasuro/OpenBazaar,blakejakopovic/OpenBazaar,NolanZhao/OpenBazaar,rllola/OpenBazaar,bankonme/OpenBazaar,mirrax/OpenBazaar,tortxof/OpenBazaar,Renelvon/OpenBazaar,tortxof/OpenBazaar,bankonme/OpenBazaar,blakejakopovic/OpenBazaar,habibmasuro/OpenBazaar,mirrax/OpenBazaar,im0rtel/OpenBazaar,dionyziz/OpenBazaar,bankonme/OpenBazaar,NolanZhao/OpenBazaar,mirrax/OpenBazaar,bglassy/OpenBazaar,yagoulas/OpenBazaar,saltduck/OpenBazaar,NolanZhao/OpenBazaar,kordless/OpenBazaar,saltduck/OpenBazaar,rllola/OpenBazaar,tortxof/OpenBazaar,saltduck/OpenBazaar,yagoulas/OpenBazaar,mirrax/OpenBazaar,dionyziz/OpenBazaar,bglassy/OpenBazaar,Renelvon/OpenBazaar,akhavr/OpenBazaar,yagoulas/OpenBazaar,habibmasuro/OpenBazaar,matiasbastos/OpenBazaar,STRML/OpenBazaar,bglassy/OpenBazaar,kordless/OpenBazaar,kordless/OpenBazaar,rllola/OpenBazaar,atsuyim/OpenBazaar,tortxof/OpenBazaar,Renelvon/OpenBazaar,freebazaar/FreeBazaar,akhavr/OpenBazaar,yagoulas/OpenBazaar,akhavr/OpenBazaar,kordless/OpenBazaar,atsuyim/OpenBazaar,freebazaar/FreeBazaar,dionyziz/OpenBazaar,im0rtel/OpenBazaar,NolanZhao/OpenBazaar,habibmasuro/OpenBazaar,must-/OpenBazaar,bankonme/OpenBazaar,blakejakopovic/OpenBazaar,freebazaar/FreeBazaar,Renelvon/OpenBazaar