Add a default-value bool flag pretty_print to the StructuredData Dump methods.

They will dump pretty-print (indentation, extra whitepsace) by default.  
I'll make a change to ProcessGDBRemote soon so it stops sending JSON strings
to debugserver pretty-printed; it's unnecessary extra bytes being sent between
the two.

llvm-svn: 276079

lldb/source/Plugins/ScriptInterpreter/Python/PythonDataObjects.cpp

@@ -32,7 +32,7 @@ using namespace lldb_private;
 using namespace lldb;
 
 void
-StructuredPythonObject::Dump(Stream &s) const
+StructuredPythonObject::Dump(Stream &s, bool pretty_print) const
 {
     s << "Python Obj: 0x" << GetValue();
 }