Gzip 1.15 fixes wrong-file deletion race

Gzip 1.15 was released on September 20, 2026, fixing a race that could delete the wrong file when another process renamed a directory, plus a buffer overflow and data corruption when unpacking .lzh. The release includes 119 commits over 75 weeks; no CVEs were assigned.

• Race fixed: gzip no longer deletes the wrong file on parent directory rename
• Buffer overflow when unpacking .lzh after .Z and two output corruption bugs closed
• 119 commits over 75 weeks; 88 by Paul Eggert, 24 by Jim Meyering
• Empty file now yields -Inf% compression; HP-UX 11.00 and Windows 8.1 without UCRT support dropped