Check if unzip commands exists and exit with an error message displayed if not
Check if unzip commands exists and exit with an error message displayed if not

benthomasson/stdeb,pombredanne/stdeb,LeMeteore/stdeb,benthomasson/stdeb,astraw/stdeb,astraw/stdeb,LeMeteore/stdeb,sathieu/stdeb,LeMeteore/stdeb,sathieu/stdeb,benthomasson/stdeb,sathieu/stdeb,pombredanne/stdeb,astraw/stdeb,pombredanne/stdeb