Make tool_output_file's raw_ostream instance a member variable instead

of a base class.

This makes it possible to unregister the file from FilesToRemove when
the file is done. Also, this eliminates the need for
formatted_tool_output_file.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112706 91177308-0d34-0410-b5e6-96231b3b80d8

tools/llvm-dis/llvm-dis.cpp

@@ -98,7 +98,7 @@ int main(int argc, char **argv) {
 
   // All that llvm-dis does is write the assembly to a file.
   if (!DontPrint)
-    *Out << *M;
+    Out->os() << *M;
 
   // Declare success.
   Out->keep();