Add new enums for get APIs and code optimization

Add new enums for get APIs and code optimization

1. The previous mechanism for get APIs is extracting get value from received message.
But, received message could be overwritten by next message, so get API could lost the value from server.
To resolve it, this commit adds new enums and client can store the values to each independent space.
2. Replace some macros by function.

[Version] 0.2.55
[Profile] Common
[Issue Type] Update
[Dependency module] N/A
[Test] [M(T) - Boot=(OK), sdb=(OK), Home=(OK), Touch=(OK), Version=tizen-mobile_20161101.3]

Change-Id: I687b53b8cba6bb759feea5191320911409a8496b
Signed-off-by: Jeongmo Yang <jm80.yang@samsung.com>