(bug 28401) Make RC en RCL honour options for rss/atom

(bug 28401) Make RC en RCL honour options for rss/atom

RecentChanges and RecentChangesLinked should link to atom/rss feeds using the same options as specified for the pages themselves. E.g. if somebody is looking at Special:RecentChanges&hideliu=1&namespace=1 the feed(s) should link to Special:RecentChanges&feed=atom&hideliu=1&namespace=1. All options available on RC and RCL are already supported by their feeds, except the maximum number of changes in feeds is bound by $wgFeedLimit.

Change-Id: I8fb00ccd7efdd962a8a42f0bce3eac5177e2cfbd