Redirect-related bugfixes/features:

Redirect-related bugfixes/features:
* (bug 11644) Add $wgMaxRedirects variable to control how many redirects are recursed through until the "destination" page is reached.
** update redirect page UI to show each step down to the destination page
** rdfrom text still links to original page visited
** pages still show up in DoubleRedirects
** setting to 1 (default) is current behavior of only going 1 step down. Setting to 0 disables automatic redirects.
** arrow image needs to be smoothed, couldn't figure out how to do it myself while keeping the image in indexed mode
* (bug 10569) Redirects to Special:Mypage and Special:Mytalk are no longer allowed to prevent redirect loops
** can be re-enabled by changing the $wgInvalidRedirectTargets array