[CMake] [Order-files] Use print_function as an attempt at being forward compatible.
[CMake] [Order-files] Use print_function as an attempt at being forward compatible.

Based on feedback from bogner.

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@257936 91177308-0d34-0410-b5e6-96231b3b80d8

apple/swift-clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang