snap-2004-11-03 breakage

[Gisle Vanem]

snap-2004-11-03 breaks a lot of applications by the way 'pthread_t' is 
defined:

typedef struct {
    void * p;                   /* Pointer to actual object */
    unsigned int x;             /* Extra information - reuse count etc */
} ptw32_handle_t;

typedef ptw32_handle_t pthread_t;

Code like (from Ettercap)
  pthread_t pid = ec_thread_getpid("golem");
  if (pid != 0)
    ec_thread_destroy(pid);

no longer works; you cannot compare a struct against 0.

I'm not sure you really meant to do that or if the typedef should be
typedef ptw32_handle_t *pthread_t;

--gv