GP-3276 Put all C++ classes in ghidra namespace

Ghidra/Features/Decompiler/src/decompile/cpp/transform.cc

@@ -16,6 +16,8 @@
 #include "transform.hh"
 #include "funcdata.hh"
 
+namespace ghidra {
+
 AttributeId ATTRIB_VECTOR_LANE_SIZES = AttributeId("vector_lane_sizes",130);
 
 /// \param op2 is the lane description to copy from
@@ -756,3 +758,5 @@ void TransformManager::apply(void)
   transformInputVarnodes(inputList);
   placeInputs();
 }
+
+} // End namespace ghidra