Jordan Rose 06f3c11377 [Serialization] Use full target architectures for swiftmodule files (#21053) ...

Previously these used the same "major architecture" names that the
`#if os(...)` query accepts, but that can be a problem when building
for, say, both armv7 and armv7s, even if the content is "the same".

For a transition period where external build tools are involved, the
compiler will look for "arm.swiftmodule" if it fails to find
"armv7.swiftmodule" or any other 32-bit ARM architecture. No other
Apple platform architectures are affected, and AFAIK no one's using
the architecture-based layout on Linux or any other platforms.

rdar://problem/45174692

2018-12-06 13:31:02 -08:00

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