Older Trac ticket links redirect to this site, but not to the specific ticket

Current behavior

An old ticket link is redirected to this new site, just not to the actual ticket, so some form of redirection is configured:

	old link	redirects to
HTTP	http://hackage.haskell.org/trac/ghc/ticket/698	https://ghc.haskell.org/trac/ghc
HTTPS	https://hackage.haskell.org/trac/ghc/ticket/698	https://ghc.haskell.org/trac/ghc

Desired outcome

An old ticket link should redirect to the actual ticket:

	old link	redirects to
HTTP	http://hackage.haskell.org/trac/ghc/ticket/698	#698 (closed)
HTTPS	https://hackage.haskell.org/trac/ghc/ticket/698	#698 (closed)

Importance

This is at least mildly important, as sites like Stack Overflow and old mailing list archives that show up in Google results still have comments and posts with these old Trac links, and some of those Trac tickets contain information that is very valuable.

It would be nice if the user experience upon clicking one of the old links was much better.