Don't print out "script" results twice.
Don't print out "script" results twice.

We now properly detect when a result object has an immediate output stream and don't echo the results a second time.

<rdar://problem/15954906>



git-svn-id: 4c4cc70b1ef44ba2b7963015e681894188cea27e@200882 91177308-0d34-0410-b5e6-96231b3b80d8

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