[darwin-x86] Refresh prebuilts for aarch64

Change-Id: If25bd793d12896a8b1ea7b8f78a0830f25481e8e
GCC: 4.9 (pre-release)
Binutils: 2.24
GDB: 7.7
(cherry picked from commit 3de38602566c5c8db70a6e581ac2bb30d8359963)
240 files changed