Update.
* init.c (pthread_functions): New variable.
(__pthread_initialize_minimal): Pass pointer to pthread_functions
(or NULL) to __libc_pthread_init.
* forward.c: Rewrite to use __libc:pthread_functions array to get
function addresses.
* sysdeps/unix/sysv/linux/fork.h: Remove __libc_pthread_init
prototype.
* sysdeps/unix/sysv/linux/libc_pthread_init.c (__libc_pthread_init):
Take new parameter. Copy content of variable pointed to by it
to __libc_pthread_init.
* pthreadP.h (struct pthread_functions): New type.
(__libc_pthread_init): Declare.
* pthread_attr_destroy.c: Add namespace protected alias.
* pthread_attr_getdetachstate.c: Likewise.
* pthread_attr_getinheritsched.c: Likewise.
* pthread_attr_getschedparam.c: Likewise.
* pthread_attr_getschedpolicy.c: Likewise.
* pthread_attr_getscope.c: Likewise.
* pthread_attr_setdetachstate.c: Likewise.
* pthread_attr_setinheritsched.c: Likewise.
* pthread_attr_setschedparam.c: Likewise.
* pthread_attr_setschedpolicy.c: Likewise.
* pthread_attr_setscope.c: Likewise.
* pthread_cond_broadcast.c: Likewise.
* pthread_cond_destroy.c: Likewise.
* pthread_cond_init.c: Likewise.
* pthread_cond_signal.c: Likewise.
* pthread_cond_wait.c: Likewise.
* pthread_condattr_destroy.c: Likewise.
* pthread_condattr_init.c: Likewise.
* pthread_equal.c: Likewise.
* pthread_exit.c: Likewise.
* pthread_getschedparam.c: Likewise.
* pthread_self.c: Likewise.
* pthread_setcancelstate.c: Likewise.
* pthread_setschedparam.c: Likewise.
* pthread_mutex_destroy.c: Likewise.
* pthread_mutex_init.c: Likewise.
* pthreadP.h: Add prototypes for the aliases.