verify-uselistorder: More outs() and errs(), less dbgs()
verify-uselistorder: More outs() and errs(), less dbgs()

Change all the normally relevant output in `verify-uselistorder` from
using `dbgs()` to using `outs()` and `errs()`.  Now you don't need
`-debug=uselistorder` to figure out what's going on (or at what stage
verification failed, or to get the paths of the left-behind temporary
files).  This is a debugging tool, so I put the logging messages on
`outs()` and the error messages on `errs()`.

I also adjusted the output to be less ***loud***.  Not sure why I was so
`*`-happy when I first wrote this.

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@234929 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,llvm-mirror/llvm,apple/swift-llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,dslab-epfl/asap,dslab-epfl/asap,GPUOpen-Drivers/llvm,dslab-epfl/asap,dslab-epfl/asap,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,llvm-mirror/llvm,dslab-epfl/asap,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,apple/swift-llvm,dslab-epfl/asap,llvm-mirror/llvm,apple/swift-llvm,dslab-epfl/asap