[DGD] LXR site for DGD updated

[Kris Van Hees]

The source cross referencing site (using LXR) for DGD source code has been
updated to add 1.2.120 to the list of versions that are available.  Before
it only provided 1.2, 1.2p1, 1.2p2, 1.2p3, and 1.2p4.  However, since it's
been quite long since 1.2p4 was released, I thought it would be useful  to
add the latest experimental release to the source repository.

The URL remains the same (though it has been inactive for quite a while as
a result of some moving around):

	http://www.alchar.org/dgd/source/

	Cheers,
	Kris