* lib/jit_names.c: New file with single definition of string
representation of lightning IR codes.
* size.c: Modified to append the code name in a C comment
after the maximum instruction size.
* lib/jit_print.c: Minor change to not duplicate jit_names.c
contents.
* lib/jit_aarch64-sz.c, lib/jit_alpha-sz.c, lib/jit_arm-sz.c,
lib/jit_hppa-sz.c, lib/jit_ia64-sz.c, lib/jit_mips-sz.c,
lib/jit_ppc-sz.c, lib/jit_s390x-sz.c, lib/jit_sparc-sz.c,
lib/jit_x86-sz.c: Rewritten to add string representation of
IR codes in a C comment.
