Fixes #476: create was broken for FTP URLs.
Fixes #476: create was broken for FTP URLs.

EmreAtes/spack,matthiasdiener/spack,mfherbst/spack,TheTimmy/spack,iulian787/spack,EmreAtes/spack,matthiasdiener/spack,krafczyk/spack,LLNL/spack,krafczyk/spack,LLNL/spack,tmerrick1/spack,krafczyk/spack,matthiasdiener/spack,lgarren/spack,lgarren/spack,iulian787/spack,skosukhin/spack,LLNL/spack,EmreAtes/spack,tmerrick1/spack,LLNL/spack,iulian787/spack,LLNL/spack,krafczyk/spack,tmerrick1/spack,TheTimmy/spack,skosukhin/spack,mfherbst/spack,matthiasdiener/spack,TheTimmy/spack,tmerrick1/spack,EmreAtes/spack,lgarren/spack,skosukhin/spack,skosukhin/spack,iulian787/spack,lgarren/spack,mfherbst/spack,iulian787/spack,mfherbst/spack,TheTimmy/spack,tmerrick1/spack,EmreAtes/spack,krafczyk/spack,matthiasdiener/spack,lgarren/spack,TheTimmy/spack,skosukhin/spack,mfherbst/spack