Include guard naming fix (names starting with underscore+capital letter are reserved in C++, so we should not use those)
Codeblocks project file update
GUI reads per-project settings (automatically deallocated classes) from XML project file. The project file format is described in projectfile.txt. Example project file is added for gui.
See also forum discussion at:
https://sourceforge.net/apps/phpbb/cppcheck/viewtopic.php?f=3&t=46