typdef postfix is changed to {enum}_e and {struct}_s

typdef postfix is changed to {enum}_e and {struct}_s

enum and structure are changed for better readability. In case of enum,
{enum}_t is changed to {enum}_'e', and {struct}_t is changed to
{struct}_'s'

[Version] 0.1.6
[Issue Type] Readability enhance

Change-Id: I71f8a5c2dcff354bb2f8164d599bfaa69eccd183
Signed-off-by: Jaechul Lee <jcsing.lee@samsung.com>