Making %ufar preserve AIG name. #933

Job	Run time
build-posix (macos-latest, true)	3m 26s
build-posix (ubuntu-latest, false)	4m 48s
build-posix (macos-latest, false)	4m 46s
build-posix (ubuntu-latest, true)	5m 39s
	18m 39s

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