[orc-rt] Add multi-addr dealloc/release to SimpleNativeMemoryMap. #163025
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In an ORC JIT it's common for multiple memory regions to be deallocated at once, e.g. when a ResourceTracker covering multiple object files is removed. This commit adds SimpleNativeMemoryMap::deallocateMultiple and SimpleNativeMemoryMap::releaseMultiple APIs that can be used to reduce the number of calls (and consequently IPC messages in cross-process setups) in these cases.
Adding these operations will make it easier to write an llvm::orc::MemoryMapper class that can use SimpleNativeMemoryMap as a backend.