Improve the -debug output for Debug Range Extension (NFC)
Improve the -debug output for Debug Range Extension (NFC)

Include header messages and remove unnecessary blank lines.

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@281980 91177308-0d34-0410-b5e6-96231b3b80d8
(cherry picked from commit 4e09440dd594e2028632e8350eacef838f67a6eb)

apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm