Squash commits for public release

libs/libcxx/abi/aeabi_runtime.cpp

@@ -0,0 +1,13 @@
+extern "C" {
+
+extern int __cxa_atexit(void (*)(void*), void*, void*);
+int __aeabi_atexit(void* arg, void (*func)(void*), void* dso_handle)
+{
+    return __cxa_atexit(func, arg, dso_handle);
+}
+
+int __aeabi_unwind_cpp_pr0()
+{
+    return 0;
+}
+}