OS-???? [lx] SIGEV_THREAD_ID emulation needed

*** 93,102 ****
--- 93,103 ----
  #define B_HELPER_CLONE          143
  #define B_HELPER_SETGROUPS      144
  #define B_HELPER_SIGQUEUE       145
  #define B_HELPER_TGSIGQUEUE     146
  #define B_SET_NATIVE_STACK      147
+ #define B_SIGEV_THREAD_ID       148
  
  #ifndef _ASM
  /*
   * Support for Linux PTRACE_SETOPTIONS handling.
   */