Update on freeze status of glibc 2.18?

[Roland McGrath]

> pthread_mutex_t foo = PTHREAD_MUTEX_INITIALIZER;
> 
> or 
> 
> pthread_mutex_t foo;
> pthread_mutex_init(&foo, NULL);

Precisely what POSIX specifies is that these are exactly equivalent to:

	pthread_mutex_t mutex;
	pthread_mutexattr_t attr;
	pthread_mutexattr_init (&attr);
	pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_DEFAULT);
	pthread_mutex_init (&mutex, &attr);