* sysdeps/alpha/jmpbuf-unwind.h: New file, moved from nptl/.
* sysdeps/i386/jmpbuf-unwind.h: New file, moved from nptl/.
* sysdeps/mips/jmpbuf-unwind.h: New file, moved from nptl/.
* sysdeps/powerpc/jmpbuf-unwind.h: New file, moved from nptl/.
* sysdeps/s390/jmpbuf-unwind.h: New file, moved from nptl/.
* sysdeps/sh/jmpbuf-unwind.h: New file, moved from nptl/.
* sysdeps/sparc/sparc32/jmpbuf-unwind.h: New file, moved from nptl/.
* sysdeps/sparc/sparc64/jmpbuf-unwind.h: New file, moved from nptl/.
* sysdeps/x86_64/jmpbuf-unwind.h: New file, moved from nptl/.