Security update for zsh (important)

This update for zsh fixes the following issues:

 - CVE-2014-10070: environment variable injection could lead to local
   privilege escalation (bnc#1082885)

 - CVE-2014-10071: buffer overflow in exec.c could lead to denial of
   service. (bnc#1082977)

 - CVE-2014-10072: buffer overflow In utils.c when scanning very long
   directory paths for symbolic links. (bnc#1082975)

 - CVE-2016-10714: In zsh before 5.3, an off-by-one error resulted in
   undersized buffers that were intended to support PATH_MAX characters.
   (bnc#1083250)

 - CVE-2017-18205: In builtin.c when sh compatibility mode is used, a
   NULL pointer dereference could lead to denial of service (bnc#1082998)

 - CVE-2018-1071: exec.c:hashcmd() function vulnerability could lead to
   denial of service. (bnc#1084656)

 - CVE-2018-1083: Autocomplete vulnerability could lead to privilege
   escalation. (bnc#1087026)

 - CVE-2018-7549: In params.c in zsh through 5.4.2, there is a crash
   during a copy of an empty hash table, as demonstrated by typeset -p.
   (bnc#1082991)

 - CVE-2017-18206: buffer overrun in xsymlinks could lead to denial of
   service (bnc#1083002)

 - Autocomplete and REPORTTIME broken (bsc#896914)