Improve documentation of module_uninstall()

API page: http://api.drupal.org/api/drupal/core%21includes%21module.inc/function/m...

The code docs for module_uninstall()() need improvement. They have at least the following issues:

• They don't indicate that modules must be disabled first or what will happen if they aren't.
• They don't specify all @param or @return types.
• They don't specify the parameter defaults.
• They don't @see closely-related functions.
• Language issue: "dependent" should be "dependant" when referring to a noun. ("Dependent" is an adjective.)
• And a couple of other minor things.

Patch to follow.