Bug#2565: zgrep is not a proper executable shell script

[Ian Jackson <ian@chiark.chu.cam.ac.uk>]

Package: gzip
Version: 1.2.4-6

-chiark:~> really zgrep spong /dev/null
..: Exec format error
-chiark:~> perl -e 'exec("/usr/bin/zgrep","spong","/dev/null"); die $'\!';'
Exec format error at -e line 1.
-chiark:~> file /usr/bin/zgrep
/usr/bin/zgrep: ASCII text
-chiark:~> head -3 /usr/bin/zgrep
:
#!/bin/sh

-chiark:~>