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)

include/JSystem/JAudio2/JAUSectionHeap.h

@@ -61,7 +61,6 @@ public:
     JASVoiceBank* newVoiceBank(u32, u32);
     bool beginNewBankTable(u32, u32);
     JAUBankTable* endNewBankTable();
-    virtual ~JAUSection() {}
 
     bool isBuilding() const { return field_0x2c; }
     bool isOpen() const;