Makes 'script.sh' files executable
Makes 'script.sh' files executable

For the 'directory' and 'chroot' unpackers, these files should probably
be executable.

JosuaKrause/reprozip,JosuaKrause/reprozip,ViDA-NYU/reprozip,JosuaKrause/reprozip,ViDA-NYU/reprozip,ViDA-NYU/reprozip,JosuaKrause/reprozip,ViDA-NYU/reprozip,ViDA-NYU/reprozip