* sysdeps/alpha/setjmp.S: Remove __setjmp entry point.
* sysdeps/arm/setjmp.S: Likewise.
* sysdeps/arm/fpu/setjmp.S: Likewise.
* sysdeps/i386/setjmp.S: Likewise.
* sysdeps/i386/elf/setjmp.S: Likewise.
* sysdeps/s390/setjmp.S: Likewise.
* sysdeps/s390/elf/setjmp.S: Likewise.
* sysdeps/sh/sh3/setjmp.S: Likewise.
* sysdeps/sh/sh4/setjmp.S: Likewise.
* sysdeps/sparc/sparc32/setjmp.S: Likewise.
* sysdeps/unix/sysv/linux/ia64/setjmp.S: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/setjmp.S: Likewise.
* sysdeps/unix/sysv/linux/m68k/setjmp.c: Removed.