fixup libtool for mac builds on travis
fixup libtool for mac builds on travis

Yubico/yubikey-personalization-dpkg,eworm-de/yubikey-personalization,Yubico/yubikey-personalization,Yubico/yubikey-personalization-dpkg,eworm-de/yubikey-personalization,Yubico/yubikey-personalization-dpkg,Yubico/yubikey-personalization,eworm-de/yubikey-personalization