Debugger improved: Instruction editor added

How to use the instruction editor:
1. Load an .ELF file
2. Select an instruction from any valid memory address inside any
thread.
3. Press 'E' key and have fun. :P

Note1: I suggest to remove the function InterpreterDisAsmFrame::DClick
and use InterpreterDisAsmFrame::InstrKey to do all debugging-related
actions (Add breakpoint, Edit, Step, Run, etc.) using the same keyboard
layout as debuggers like OllyDbg.

Note2: The final binary is 200 KB larger due to this feature. This issue
should be fixed in the future. This has probably something to do with
the #include's.