Bug#526839: yelp: crash on startup

[Terry Watt]

This still occurs with gnome-session 2.26.1-7 and yelp 2.26.0-1, and the 
same fix still applies, whether on a new install or old system.  
Removing "/usr/share/gnome" from the list of directories in 
XDG_DATA_DIRS prevents yelp from seg faulting.  As best as I can tell, 
the only way to do this is still to modify 
/etc/X11/Xsession.d/55gnome-session_gnomerc directly, as that file 
sources ~/.gnomerc before adding the problematic directory to the path.  
This bug should probably be reclassified as gnome-session rather than 
yelp, but I do not know how to do that without simply opening a 
duplicate bug against gnome-session.  Or is the fact that yelp can't 
deal with this directory a problem in yelp?  It seems to me to be 
gnome-session, as it appears to be assuming (incorrectly) that 
/usr/share/gnome is just a link to /etc.