swift234

[test] Make some SIL serialization tests not order-dependent.

The order of keys in a serialized hash map is deterministic (consistent
across runs of the same compiler and same input) but not specified
(not consistent across compiler versions or modified inputs). Tweak two
tests to avoid this issue: one by sorting the output, the other by
using CHECK-DAG to ignore ordering issues.

rdar://problem/25492781&25497592