Joe Groff ef8cc448d0 Runtime: Instantiate existential metadata with special protocol set.
If an existential type for a special protocol (not a composition) is instantiated, carry the special protocol identifier from that protocol to the existential, allowing us to easily recognize existentials with unique runtime characteristics.

Swift SVN r26436
2015-03-23 17:06:22 +00:00
2015-03-20 22:32:19 +00:00
2015-03-23 15:18:38 +00:00
2015-03-20 22:32:19 +00:00
2014-02-14 15:02:42 +00:00
2015-03-20 22:32:19 +00:00
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