What does diversion in dpkg -S mean

[Alan Chandler <alan@chandlerfamily.org.uk>]

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I am having trouble compiling qt-copy in that it fails to find include 
XftFreetype.h

When I do a dpkg -S XftFreetype* I get

diversion by libxft2-dev from: /usr/X11R6/include/X11/Xft/XftFreetype.h
diversion by libxft2-dev to: /usr/X11R6/include/X11/Xft/XftFreetype1.h
diversion by libxft2-dev from: /usr/X11R6/include/X11/Xft/XftFreetype.h
diversion by libxft2-dev to: /usr/X11R6/include/X11/Xft/XftFreetype1.h
xlibs-dev: /usr/X11R6/include/X11/Xft/XftFreetype.h

and only a copy of XftFreetype1.h installed.  

Does this text mean that the libxft2-dev package has changed the name - and if 
so why?
- -- 
Alan Chandler
alan@chandlerfamily.org.uk
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