Update git to 2.9.3
Update git to 2.9.3

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