psgml DTDs moved

Ok, I've just committed the psgml package split that was discussed previously here. Here's an executive summary of what I did (see also the patch message in xemacs-patches, and the new psgml-dtds package directory). - Moved everything except iso88591.map from psgml/etc to psgml-dtds/etc. iso88591.map is part of the upstream psgml package, it was moved to psgml/ to match upstream layout. - Moved the DTD compilation stuff from psgml to psgml-dtds. - Made psgml to look for DTDs from psgml-dtds' data-directory by default, in addition to the ones it used to search from. - Made psgml-dtds require psgml (and a couple of other packages that are required when compiling the DTDs), but not vice versa. - psgml-dtds' package description notes that it's obsolete. I've tested this somewhat myself, and Rendhalver has done some testing too, so things shouldn't be horribly broken. More testing is very much welcome, I think Rendhalver will roll pre-release packages of these soonish. I'll send in website and man/xemacs/packages.texi patches later today. Cheers, -- \/ille Skyttä ville.skytta at xemacs.org