Replaced the $Id$ tags in $WikiDescription for all the modules and wiki.pl itself with a link to the source and an appropriate wiki page, if possible. This is shown in action=version and should help users figure out what another wiki has installed.
parameters, taking care to separate normal values from language
values (exactly two letters).
(NewLangGetNearLinksUsed): New hidden parameter so that we know
when no languages are set.