Make signal queues per thread.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4635 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index a8ea6c5..5f2b48a 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -2736,12 +2736,8 @@
         }
 #endif
         ts = malloc(sizeof(TaskState) + NEW_STACK_SIZE);
-        memset(ts, 0, sizeof(TaskState));
+        init_task_state(ts);
         new_stack = ts->stack;
-        ts->used = 1;
-        /* add in task state list */
-        ts->next = first_task_state;
-        first_task_state = ts;
         /* we create a new CPU instance. */
         new_env = cpu_copy(env);
         /* Init regs that differ from the parent.  */