Get test_wait3 and test_wait4 working

from_cpython/Lib/test/test_wait3.py

-# expected: fail
 """This test checks for correct wait3() behavior.
 """
 

from_cpython/Lib/test/test_wait4.py

-# expected: fail
 """This test checks for correct wait4() behavior.
 """
 

from_cpython/Modules/posixmodule.c

@@ -6109,6 +6109,8 @@ wait_helper(pid_t pid, int status, struct rusage *ru)
         Py_DECREF(m);
         if (struct_rusage == NULL)
             return NULL;
+        // Pyston addition:
+        PyGC_RegisterStaticConstant(struct_rusage);
     }
 
     /* XXX(nnorwitz): Copied (w/mods) from resource.c, there should be only one. */

src/runtime/builtin_modules/thread.cpp

@@ -220,6 +220,8 @@ void setupThread() {
         "start_new_thread",
         new BoxedBuiltinFunctionOrMethod(
             BoxedCode::create((void*)startNewThread, BOXED_INT, 3, false, false, "start_new_thread"), { NULL }));
+    thread_module->giveAttrBorrowed("start_new", thread_module->getattr(getStaticString("start_new_thread")));
+
     thread_module->giveAttr("allocate_lock", new BoxedBuiltinFunctionOrMethod(
                                                  BoxedCode::create((void*)allocateLock, UNKNOWN, 0, "allocate_lock")));
     thread_module->giveAttr(

test/CPYTHON_TEST_NOTES.md

@@ -172,8 +172,6 @@ test_unicode            argument passing issue?
 test_userdict           segfault: repr of recursive dict?
 test_userlist           slice(1L, 1L)
 test_userstring         float(1L); hangs in test_replace
-test_wait3              [unknown]
-test_wait4              [unknown]
 test_warnings           [unknown]
 test_weakref            weird function-picking bug (something around float.__add__), plase also fix the weakref issue in test_abc
 test_winreg             [unknown]