CLSA-2026-1777051545 zsh: Fix of 3 CVEs

CVE-2018-1071: check bounds when copying path in hashcmd - CVE-2018-7549: avoid crash copying empty hash table - CVE-2018-13259: fix shebang line truncation in zexecve...

EUVD-2018-5207

Malware in sbrugna...