message: Use CLONE_THREAD for linux pte_clone
diff: @@ -30,6 +30,7 @@ const CLONE_VM: usize = 0x0100;
  const CLONE_FS: usize = 0x0200;
  const CLONE_FILES: usize = 0x0400;
  const CLONE_SIGHAND: usize = 0x0800;
  +const CLONE_THREAD: usize = 0x00010000;
  #[repr(C)]
  #[derive(Default)]
  @@ -340,7 +341,7 @@ impl Pal for Sys {
  #[cfg(target_arch = "x86_64")]
  unsafe fn pte_clone(stack: *mut usize) -> pid_t {
  - let flags = CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND;
  + let flags = CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND | CLONE_THREAD;
  let pid;
  llvm_asm!("
  # Call clone syscall
  