resolved some bug into caching system

Change-Id: I539fabe4de2cca588b06760c917912a7b7017206
added new classes for SlowCommand and Driver into CUToolkit

Change-Id: I301330c2a68c58cd30ab5353f6da535acbe5aa3b
added the accessor and driver base implementation for the communication queue
allcoation. These queue will be used for the comunication between the driver
and the other class

Change-Id: I9f25017a1211f3edd26e085b5a8d701d90b35f2c
changed the driver and accessor comunication system. Added the sync and async queue.

Change-Id: I9366cbbbb032cd0a42797f59ac5fb65486a290be
debuging of driver abstract layer

Change-Id: I34e60c9aa32f0bd07977dffd0ca865264fb2e212
refactoring of the driver

Change-Id: Ie07c13077ddd4f7e1ed5b7961abe664079be08ef