Revert "[Order Files] Remove dtrace predicate"
Revert "[Order Files] Remove dtrace predicate"

This reverts commit r277487.

Removing the probe predicate was a red herring. It results in more symbols being placed in the final order file, but they are symbols from outside the clang image.

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@277492 91177308-0d34-0410-b5e6-96231b3b80d8

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