install script not working with recent 'setuptools' package distribution

setuptools version 3.1 is now distributed in both .tar.gz and .zip format from 
PIP

the installation script 'install.sh' line 317
filters the available package using:
grep "source/./$pkg.*z" |sed 's:.*href="\([^#"]*\)["#].*:\1:g' | sort | tail -1 

this produces the link to the .zip package (while it should be the .tar.gz)

install.sh expects a .tar.gz for the setuptools, thus failing the installation.

Proposal: replace grep "source/./$pkg.*z" with grep "source/./$pkg.*gz"

Original issue reported on code.google.com by sergio.m...@gmail.com on 14 Mar 2014 at 1:14

abhilekhsingh / gc3pie

install script not working with recent 'setuptools' package distribution #426