corkscrew: Fix build with gcc 4.8 && sync_test: Use -fno-strict-aliasing

https://github.com/DJL10-2/android_system_core/commit/fd6f4776440210733b5c92c9d78935fa7a0056e5

https://github.com/DJL10-2/android_system_core/commit/9275a4e4f37040ff72ddf5031466f8cae04ac047