Merge pull request #3159 from rintaro/unittest-build-mode

[test] Get Swift-Unit test suite to work

Author: gottesmm

test/Unit/lit.site.cfg.in

@@ -1,10 +1,10 @@
 ## Autogenerated by LLVM/Swift configuration.
 # Do not edit!
-config.llvm_src_root = "@LLVM_SOURCE_DIR@"
+config.llvm_src_root = "@LLVM_MAIN_SRC_DIR@"
 config.llvm_obj_root = "@LLVM_BINARY_DIR@"
 config.llvm_tools_dir = "@LLVM_TOOLS_DIR@"
 config.llvm_libs_dir = "@LLVM_LIBS_DIR@"
-config.build_mode = lit_config.params.get('build_mode', "@LLVM_BUILD_MODE@")
+config.build_mode = lit_config.params.get('build_mode', "@SWIFT_BUILD_MODE@")
 config.swift_obj_root = "@SWIFT_BINARY_DIR@"
 config.target_triple = "@TARGET_TRIPLE@"