Work on weak order (#2979)

* JAUSectionHeap OK

* Slightly improve d_camera weak func order (12 -> 10)

* Minor d_a_alink fixes

* weak_order_diff.py: Change to take source file as cli argument instead of .o file

For cli autocompletion to work.

* Reorganize J3D structs (no change in weak order)

src/JSystem/JAudio2/JAUSectionHeap.cpp

@@ -53,7 +53,6 @@ namespace {
             }
             return field_0x8[short_id];
         }
-        virtual ~TStreamDataMgr() {}
 
         bool isValid() { return field_0x4; }