[Gtkradiant] zerowing svn is back

[SmallPileofGibs]

Hi,

The zerowing subversion server is back up, with a new location:

https://zerowing.idsoftware.com/svn/radiant/


If you have a local copy of the gtkradiant source, you'll need to
switch it to the new location. Use 'svn switch --relocate' like this:

svn switch --relocate https://zerowing.idsoftware.com:666/radiant/ https://zerowing.idsoftware.com/svn/radiant/