LRUCache + ELUtils

[pizzi80]

• LRUCache implementation adapted to the Util codebase of Faces
• ELUtils use the new LRUCache instead of a custom local implementation

The LRUCache can also be used in other part of the code that now use a Collection.synchronizeMap over the LRUMap

[BalusC]

Looks great for the remainder :)

[pizzi80]

I've further improved and unified with the Cache.Factory inside util.Cache

what do you think?

[BalusC]

This is a great improvement.