CLSA-2026-1778237657 binutils: Fix of 4 CVEs

CVE-2025-5244: fix ld segfault on fuzzed object via NULL group head - CVE-2025-5245: fix segv in objdump debugtypesamep and debugwritetype on incomplete enum types - CVE-2026-3441: fix xcofflink XTYLD xscnlen out-of-bounds index - CVE-2026-3442: fix xcofflink rsymndx out-of-bounds sym hash index...