Big dwarf dump improvements

[dbalatoni13]

Additions:

• Typedefs defined in functions, inlines, function blocks and structs, omitting ones generated by the compiler
• Structs defined in subroutine blocks (I'm not sure if that's practically possible, GCC seems to propagate them to the function body)
• Handle override, const, volatile, virtual, static modifiers on functions
• Omit the this parameter in member functions, moving its register location into a comment
• Correctly show the parent class in overriden GCC functions, putting the original class of the virtual function in a comment instead
• Properly name GCC destructors
• Omit return type of constructors and destructors
• Static struct members
• Fix inline param duplication bug
• Add fallback for detecting the parent of functions in PS2 MWCC
• Demangle MWCC and GNUv2 function names (because of operator overrides)
• Correctly recognize MWCC typedefs as static struct members
• Keep the correct order of blocks and inlines

See this dump as an example.