Update LangRef for changes to the alias textual IR format to support typeless pointer work
Update LangRef for changes to the alias textual IR format to support typeless pointer work

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@250967 91177308-0d34-0410-b5e6-96231b3b80d8

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