Add action-hooks for caching-plugins (WP Super Cache, etc)

[erunafailaro]

Allow better integration of caching-plugins like WP Super Cache, WP Widget Cache and DB Cache.

The Idea would be to add the following three action-hooks to WordPress and to allow plugins to hook into them:

• activate_all_cache_plugins
• deactivate_all_cache_plugins
• clear all caches

Three buttons could be added to the WordPress options to allow the user to clear all caches, activate or deactivate all caches from one single point inside the admin-panel instead of visiting the plugin-option-panel of every single cache-plugin.

[Denis-de-Bernardy]

seems a bit overkill. which hooks you'll need will depend on what you're caching. These are the ones you'll usually want to consider to clean caches:

'save_post',
'delete_post',
'add_link',
'edit_link',
'delete_link',
'edit_comment',
'comment_post',
'wp_set_comment_status',
'switch_theme',
'update_option_show_on_front',
'update_option_page_on_front',
'update_option_page_for_posts',
'update_option_sidebars_widgets',
'generate_rewrite_rules',

they won't necessarily be valid for all caching plugins.