This function recounts many forum totals that can be recounted automatically without harm.

• Recounts many forum totals that can be recounted automatically without harm.
• Requires the admin_forum permission.
• Shows the maintain_forum admin area.
• Fixes topics with wrong num_replies.
• Updates the num_posts and num_topics of all boards.
• Recounts instant_messages but not unread_messages.
• Repairs messages pointing to boards with topics pointing to other boards.
• Updates the last message posted in boards and children.
• Updates member count, latest member, topic count, and message count.
• Redirects back to ?action=admin;area=maintain when complete.
• Accessed via ?action=admin;area=maintain;sa=recount.
• Was found in Admin.php in SMF 1.x