This patch removes support for URLs like taxonomy/term/1,2,3 and taxonomy/term/1+2+3 plus the depth argument from taxonomy module.
Reasons for doing so:
# We have load of special casing in taxonomy term rendering. If we want to show fields on these pages properly and be able to render taxonomy/term/% pages through a template, then we need to be able to have taxonomy-term.tpl.php and taxonomy-term-$vocabulary.tpl.php - for that we need predictable input.
# Those paths are barely documented anywhere and only exist by magic.
# Views 2 can recreate those paths, and also comes with default views which provide the same functionality - and it does so in a much more generic way.
# taxonomy_term_page can now be split into the actual page callback and a separate callback for the feed, and they're generally a bit less spaghetti.