Per patch from Nathan Field at ghs.com, add a couple of variables

needed to make gdb happy when debugging threadded apps.

libpthread/linuxthreads/manager.c

@@ -56,6 +56,10 @@ struct pthread_handle_struct __pthread_handles[PTHREAD_THREADS_MAX] =
 /* For debugging purposes put the maximum number of threads in a variable.  */
 const int __linuxthreads_pthread_threads_max = PTHREAD_THREADS_MAX;
 
+/* Put the size of the pthread_descr in a variable to make gdb happy. */
+const int __linuxthreads_pthread_sizeof_descr
+  = sizeof(struct _pthread_descr_struct);
+
 /* Indicate whether at least one thread has a user-defined stack (if 1),
    or if all threads have stacks supplied by LinuxThreads (if 0). */
 int __pthread_nonstandard_stacks;

libpthread/linuxthreads/specific.c

@@ -27,6 +27,9 @@
 static struct pthread_key_struct pthread_keys[PTHREAD_KEYS_MAX] =
   { { 0, NULL } };
 
+/* Put the maximum number of keys in a variable to make gdb happy. */
+const int __linuxthreads_pthread_keys_max = PTHREAD_KEYS_MAX;
+
 /* Mutex to protect access to pthread_keys */
 
 static pthread_mutex_t pthread_keys_mutex = PTHREAD_MUTEX_INITIALIZER;