Shell output

Don't spam users unless requested via -v.  Useful if you have large number of cached items.

Normal output:

```
rachman@fingolfin $ Console/cake clear_cache.clear_cache 
Files cleaned: 25

Engines cleaned: 16

$ 
```


Verbose output:

```
rachman@fingolfin $ Console/cake clear_cache.clear_cache -v
Files cleaned: 27

	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/models/croogo_cake_model_default_croogo_acos
	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/models/croogo_cake_model_default_croogo_aros
	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/models/croogo_cake_model_default_croogo_aros_acos
	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/models/croogo_cake_model_default_croogo_blocks
	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/models/croogo_cake_model_default_croogo_comments
	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/models/croogo_cake_model_default_croogo_contacts
	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/models/croogo_cake_model_default_croogo_links
	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/models/croogo_cake_model_default_croogo_list
	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/models/croogo_cake_model_default_croogo_menus
	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/models/croogo_cake_model_default_croogo_messages
	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/models/croogo_cake_model_default_croogo_meta
	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/models/croogo_cake_model_default_croogo_nodes
	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/models/croogo_cake_model_default_croogo_nodes_taxonomies
	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/models/croogo_cake_model_default_croogo_regions
	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/models/croogo_cake_model_default_croogo_roles
	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/models/croogo_cake_model_default_croogo_taxonomies
	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/models/croogo_cake_model_default_croogo_terms
	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/models/croogo_cake_model_default_croogo_types
	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/models/croogo_cake_model_default_croogo_types_vocabularies
	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/models/croogo_cake_model_default_croogo_users
	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/models/croogo_cake_model_default_croogo_vocabularies
	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/persistent/croogo_cake_core_cake_eng
	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/persistent/croogo_cake_core_croogo_en-us
	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/persistent/croogo_cake_core_croogo_eng
	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/persistent/croogo_cake_core_default_eng
	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/persistent/croogo_cake_core_file_map
	deleted: /home/rachman/work/personal/deploy/croogo/tmp/cache/persistent/croogo_cake_core_method_cache

Engines cleaned: 16

	_cake_core_: cleared
	_cake_model_: cleared
	permissions: cleared
	cached_settings: cleared
	croogo_comments: cleared
	contacts_view: cleared
	nodes: cleared
	nodes_view: cleared
	nodes_promoted: cleared
	nodes_term: cleared
	nodes_index: cleared
	croogo_menus: cleared
	users_login: cleared
	croogo_blocks: cleared
	croogo_types: cleared
	croogo_vocabularies: cleared

```