Fixed issue #144 (modified files: AD7Engine.cs, AD7StackFrame.cs, AD7Thr...

...ead.cs and EventDispatcher.cs).

Also:
- modified GDBParser to generate another log file containing the parsed GDB responses (modified files: gdb-connect.cpp and gdb-connect.h);
- updated instructions.txt file;
- modified an error message that is presented when VS cannot attach the app to the debugger (modified file: VSNDK.PackagePackage.cs).