Move all menu-related hooks and topic to new menu.api.php file

Moved all the listed hooks:
hook_menu_links_discovered_alter()
hook_menu_local_tasks()
hook_menu_local_tasks_alter()
hook_menu_local_actions_alter()
hook_local_tasks_alter()
hook_contextual_links_alter()
hook_contextual_links_plugins_alter()
hook_system_breadcrumb_alter()

and the topic related to menu from:

• core/modules/system/system.api.php
• core/includes/menu.inc

to a new file: "core/modules/system called menu.api.php" .

Removed whitespace

Removed white spaces.

+++ b/core/modules/system/menu.api.php
@@ -0,0 +1,451 @@
+  ¶
+}
+
+/**
+ * Alter local actions plugins.
+ *
+ * @param array $local_actions
+ *   The array of local action plugin definitions, keyed by plugin ID.
+ *
+ * @see \Drupal\Core\Menu\LocalActionInterface
+ * @see \Drupal\Core\Menu\LocalActionManager
+ *
+ * @ingroup menu
+ */
+function hook_menu_local_actions_alter(&$local_actions) {
+  ¶

There are still couple of white spaces in line 332 and line 347.
And also please provide a interdiff while re-rolling a patch.

Regards,
Chakrapani

Spaces removed & interdiff added.

Spaces removed & interdiff added.

I am sorry I am somewhat new to patching. Above instructions incorporated!

Spaces removed & interdiff added.

Just fixed the corrupted line in patch from #15

I'm trying to start over from scratch. Copy/paste hooks from system.api.php in according to #18.
In this patch i'm skipped item e) from issue summary. Please, tell me if it need to do too.

I'm sorry about the 0 bytes patch. Please ignore #19.

First patch, so don't laugh.

see, I said don't laugh

for (c), there was an enddef block at the end of the file, but I took that out and did (d), per instructions. That has the same effect, yes?

for (a), your diff above has a minus in front of the @section line, but your instructions said just those 3 lines, not the @section line, so I left it in. Also, I noticed that it differed slightly from the @section lines above and below it, in that it those had a machine name for the section (?), I'm just guessing now.
* @section sec_controller Route controllers for simple routes
So I changed the rendering section line to:
* @section sec_rendering Rendering menus