Classes encapsulation/abstraction changed in types

Classes encapsulation/abstraction changed in types

class Context
  - To abstract class (IContext)

class CsContext and WpContext
  - To unmovable, uncopyable. To copy shouldn't be done without
    any notice. The only case to be moved was for serialization, so
    it has been replaced to dynamic allocation not to be moved/copied

class Result
  - To abstract class (IResult)
  - To struct (break encapsulation). The reason of be class of it was
    for polymorphism (can get/set member variables with IResult). But
    when it goes into resource vector to be freed after appropriate
    pointer is given to client. So it's not needed to be polymorphistic.

Change-Id: I54fd7479d4008dbcb65a3cae51ecee8a436f19d6
Signed-off-by: Kyungwook Tak <k.tak@samsung.com>