* gnu/packages/antivirus.scm: New file. * gnu/packages/patches/clamav-system-tomsfastmath.patch, gnu/packages/patches/clamav-config-llvm-libs.patch: New files. * gnu/local.mk (GNU_SYSTEM_MODULES): Add new module. (dist_patch_DATA): Add patches. Co-authored-by: Christopher Baines <mail@cbaines.net>