swift

9e9d66ef - [overlay] Support the older @rpath Darwin library for _Builtin_float's $ld$previous$ symbols

[overlay] Support the older @rpath Darwin library for _Builtin_float's $ld$previous$ symbols The _Builtin_float symbols were moved twice, most recently from the OS Darwin library, but previously they were in the embedded @rpath Darwin library. @_originallyDefinedIn doesn't support multiple install names, but it can be replaced with -module-abi-name, and then multiple $ld$previous$ symbols can be used. Update the Platform and Concurrency magic symbols to use $ld$previous$ everywhere. rdar://130107191