e32f487e1c
* sysdeps/unix/sysv/linux/Versions [libc, GLIBC_2.4]: Export unshare. * sysdeps/unix/sysv/linux/syscalls.list: Add unshare syscall. * sysdeps/unix/Makefile ($(objpfx)stub-syscalls.c): Add some preprocessor magic so that the compiler won't see the prototypes for the functions we are defining as stubs.