Sync to the latest code

Sync to the latest code

1. add get char api to remove null string
2. dont check db/setting/theme vconf key duging checking of icon path
3. add submode info to desktop file
4. install fail when insert db is failed
5. implement mdm policy
6. change log api to use uniformed debug message
7. delete null string in pkgmgr db
8. change mdparser api name
9. add tag parser plugin
10. dont use global variable that is used for db query
11. fix bug - set-label api does not work properly
12. Fixed Prevent issue 31276

Change-Id: I6d8e5973c18ee46918beec6cd1c61cc9a004929e
Signed-off-by: junsuk77.oh <junsuk77.oh@samsung.com>