Merge pull request #518 from pieh/controls_nav_builtins

guilib: execute actions when going through navigation path

diff --cc xbmc/guilib/GUIBaseContainer.cpp
Simple merge

diff --cc xbmc/guilib/GUIButtonControl.cpp
Simple merge

diff --cc xbmc/guilib/GUIControl.cpp
Simple merge

diff --cc xbmc/guilib/GUIEditControl.cpp
Simple merge

diff --cc xbmc/guilib/GUIWindow.cpp
Simple merge