Only do config-time substitution of LLVM_BUILD_MODE in test/lit.site.cfg, not Unit/test/lit.site.cfg.
Only do config-time substitution of LLVM_BUILD_MODE in
test/lit.site.cfg, not Unit/test/lit.site.cfg.


git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@133609 91177308-0d34-0410-b5e6-96231b3b80d8

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