Small changes to diagnose_unwind.  Correctly provide help text. Print the lldb version at the top of the output.
Small changes to diagnose_unwind.  Correctly provide help text.
Print the lldb version at the top of the output.



git-svn-id: 4c4cc70b1ef44ba2b7963015e681894188cea27e@183289 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/lldb,apple/swift-lldb,llvm-mirror/lldb,apple/swift-lldb,apple/swift-lldb,llvm-mirror/lldb,apple/swift-lldb,apple/swift-lldb,apple/swift-lldb,llvm-mirror/lldb,llvm-mirror/lldb