As far as we know, if you use the SVN links ONLY from this topic (github, not ulyssesmod.net), Ulib and ULX work reasonably well, just not XGUI as well.
That doesn't mean Garry didn't release later Gmod code than what we've fixed lately though.
As for the links, I'll let Megiddo (or Stick) do it, because as of a day or two ago, the old links worked.
They may have changed them for a reason. Or, Github may have changed something for a reason.