Bug#43296: libc6: devpts.sh uses bashism

[Farzad FARID <farzy@via.ecp.fr>]

Package: libc6
Version: 2.1.2-0pre7
Severity: normal

This script should not start with #!/bin/sh because it uses constructions
that do not exist in the Bourne Shell. eg:
tail=${release#*.*.}
major_release=${release%.${tail}}
minor_release=${tail%%[-.]*}
        devpts=$(grep -c devpts /proc/filesystems)


-- System Information
Debian Release: potato
Kernel Version: Linux aion 2.2.9 #2 Sun May 16 11:28:44 CEST 1999 i586 unknown

Versions of the packages libc6 depends on:
ii  ldso            1.9.11-2       The Linux dynamic linker, library and utilit