swift

84a62fc1 - [Frontend/Serialization] Narrow `-swift-compiler-version` to `-interface-compiler-version`

[Frontend/Serialization] Narrow `-swift-compiler-version` to `-interface-compiler-version` It might be unexpected to future users that `-swift-compiler-version` would produce a version aligned to .swiftinterface instead of one used to build the .swiftmodule file. To avoid this possible confusion, let's scope down the version to `-interface-compiler-version` flag and `SWIFT_INTERFACE_COMPILER_VERSION` option in the module.