[routegraph] Enable anti-aliasing in track view
[routegraph] Initialize m_route to NULL
[routegraph] Do not round viewpoint coordinates when drawing
[routegraph] Add superclass Marker of Signal
[routegraph] Do not make signals children of track elements
[routegraph] Add starting points
[routegraph] Check file version, clean up code
[routegraph] Update project file with new source files
[routegraph] Add VS2010 project for Windows build
[routegraph] Delete .user file which does not belong in the repository