Fix joinable threads shutdown on NaCl

(fix of commits bd86ef8b6, 77ffb1ff5)

GC_nacl_shutdown_gc_thread() should be called (and value of
GC_nacl_gc_thread_self should be cleared) on thread termination even
for non-detached threads.  Thus, GC_nacl_initialize_gc_thread() should
be called (and value of GC_nacl_gc_thread_self should be set)
additionally if the thread is registered from its destructor.

* pthread_support.c [NACL] (GC_delete_thread): Do not call
GC_nacl_shutdown_gc_thread() and do not clear GC_nacl_gc_thread_self.
* pthread_support.c [NACL] (GC_unregister_my_thread_inner): Call
GC_nacl_shutdown_gc_thread() and clear value of GC_nacl_gc_thread_self
(after GC_destroy_thread_local).
* pthread_support.c [NACL] (GC_register_my_thread): If KNOWN_FINISHED
then set GC_nacl_gc_thread_self to me and call
GC_nacl_initialize_gc_thread().

0 files changed, 0 insertions, 0 deletions