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)

This update was imported from the SUSE:SLE-12:Update update project.