* sysdeps/unix/i386/sysdep.h (JUMPTARGET): Use ## to avoid space
before @PLT.
* sysdeps/mach/i386/sysdep.h (JUMPTARGET): New macro.
* sysdeps/i386/bsd-_setjmp.S: Use JUMPTARGET macro in jmp insn.
* sysdeps/i386/bsd-setjmp.S: Likewise.
* sysdeps/mach/i386/sysdep.h (RETURN_TO): New macro.
* Makerules (install-lib.so): Add %.so for each %_pic.a.
* sysdeps/mach/hurd/i386/init-first.c: New file.
* sysdeps/i386/dl-machine.h: New file.
* sysdeps/stub/dl-machine.h: New file.
* sysdeps/i386/dl-runtime.c: New file.
* sysdeps/stub/dl-runtime.c: New file.
* sysdeps/i386/elf/start.S: New file.
* sysdeps/generic/dl-sysdep.c: New file.
* sysdeps/mach/hurd/dl-sysdep.c: New file.