add glib unittest f/w with measuring code coverage

add glib unittest f/w with measuring code coverage

- add UTC test
- quit a task if build-error occured
- Add coverage testing by gcov
- Install GCOV data to rpm pgk.
- report the result of Gcov
- test completes on both Mobile and Wearable
- code clean & refactoring
- add Internal UTCs
- modify harded-coded path with RPM macros

Signed-off-by: MyoungJune Park <mj2004.park@samsung.com>
Conflicts:
	src/system_setting_platform.c

Change-Id: I71a486879cbdddad0c568837d9111bd28e681721
Signed-off-by: MyoungJune Park <mj2004.park@samsung.com>
Signed-off-by: jinwang.an <jinwang.an@samsung.com>