package.py : workaround for a known bug that was not fixed in python 2.6
package.py : workaround for a known bug that was not fixed in python 2.6

 https://bugs.python.org/issue1515

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