[patch] raise existing windows when opening a url from the command line and in open in new window mode

["David Adam Bordoley" <bordoley msu edu>]

http://bugzilla.gnome.org/show_bug.cgi?id=115731 has the patch. 

Basically i think that if the user has chosen to use open in new window mode 
than they expect a 1-to-1 relation between locations and their window, hence 
if they open nautilus and pass a url it should prefer an existing window 
first, and otherwise open a new window as it already does in the file 
manager. The main use case for this is gnome_vfs_url_show. If a user uses 
something like my OpenApplet, I think they'd expect this. 

This patch has no affect on browser mode. 

Ok to commit? 

dave