swift

0e8d8696 - Merge pull request #10959 from nathawes/rdar33249361-update-interface-gen-to-accept-swift-compiler-args-4.0-07-11-2017

Merge pull request #10959 from nathawes/rdar33249361-update-interface-gen-to-accept-swift-compiler-args-4.0-07-11-2017 [4.0-07-11-2017][interface-gen] Update interface gen for header files to accept Swift compiler args