* elf/link.h: Include elfclass.h to define __ELF_NATIVE_CLASS.
(ElfW, ELFW): Use it.
* elf/Makefile (headers): Add elfclass.h.
* sysdeps/wordsize-32/elfclass.h: New file.
* sysdeps/wordsize-64/elfclass.h: New file.
* sysdeps/alpha/Implies: Add wordsize-64.
* sysdeps/i386/Implies: Add wordsize-32.
* sysdeps/m68k/Implies: Add wordsize-32.
* sysdeps/mips/Implies: Add wordsize-32.
* sysdeps/sparc/Implies: Add wordsize-32.
+wordsize-64
# Alpha uses IEEE 754 floating point.
ieee754
+wordsize-32
# 68k uses IEEE 754 floating point.
ieee754
+wordsize-32
# MIPS uses IEEE 754 floating point.
ieee754