This improves reliability by doing parsing of potentially untrusted data in a separate process. It opens the door for further security improvements if we can lock down the reexec-ed process. It also improves import performance by only taking the backup and restore privileges once, for the whole process. Signed-off-by: John Starks <jostarks@microsoft.com> Upstream-commit: b3bc5e0fe4c62b1c0193fc19777b22636368b551 Component: engine