…ightly more portable. There's slightly less concurrency as a result as all archiving operations are now performed serially on the main thread. Since these make up a small percentage of the overall runtime, the increased portability makes this a reasonable tradeoff.
…ng the BinaryDelta tool against different SDKs.
…tween two versions of an application. The delta file is a custom format created from the xar container format. It describes the necessary modifications to transform the contents of the old directory in to the contents of the new. Binary diffs are used to compress the differences between large files such as Mach-O binaries. The binary diffs are generated by bsdiff and applied via bspatch, both from bsdiff 4.3, the source of which is included and used under a BSD-style license.