Add wrappers for ExitProcess, TerminateProcess

[Dave Korn]

Charles Wilson wrote:

> int main(int argc, char* argv[])
> {
> //cygwin_terminate_process (GetCurrentProcess(),
>                             STATUS_ILLEGAL_DLL_PSEUDO_RELOCATION);
>   cygwin_exit_process (STATUS_ILLEGAL_DLL_PSEUDO_RELOCATION);
>   exit (1);
> }

  Heh.  I see what you did there!

    cheers,
      DaveK