CLSA-2026-1775721575 binutils: Fix of 4 CVEs

CVE-2025-5244: fix NULL deref in elfgcsweep with empty groups - CVE-2025-5245: fix SEGV in debugtypesamep, handle undefined tagged enums - CVE-2026-3441 CVE-2026-3442: fix out-of-bounds read in XCOFF relocation processing...