These are needed by the build scripts, but in RISC-V being empty is enough. * lib/linux/riscv64-mes-gcc/crti.c, lib/linux/riscv64-mes-gcc/crtn.c, lib/linux/riscv64-mes-tcc/crti.c, lib/linux/riscv64-mes-tcc/crtn.c: New files.
