Nate Chandler 3edf8e16de [metadata prespecialization] Bump availability. ...

Previously, the availability was 5.3.  Since
compareProtocolConformanceDescriptors was added in 5.4 and was used by
metadata accessors with baked-in checks for arguments which matched
prespecializations, 5.3 was incorrect.  Moreover, now that the searching
for matches is done by getGenericMetadata, the metadata accessors no
longer contain the early exits, so running against a 5.3 runtime would
entail the metadata accessor failing to produce canonical prespecialized
records.

Here, the availability is bumped to 5.4 which includes the runtime
changes to support the metadata accessors not having early exits to
return prespecialized records.

2020-08-14 11:24:41 -07:00

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