- Fix stat struct for Android (found by SEGV at run-pass/stat.rs)
- Adjust some test cases to rpass for Android
- Modify some script to rpass for Android
LLVM provides these functions as intrinsics, and will generate calls to
libc when appropriate. They are exposed in the `ptr` module as
`copy_nonoverlapping_memory`, `copy_memory` and `set_memory`.