Integrate changes from Tizen 2.4

Integrate changes from Tizen 2.4

- Add a smack rule for security API
- Fix the prevent issue 451595
- Add a missing smack rule, media-data::cb
- Remove mediahistory.admin privilege entries
- Modify launching sequence.
- Break the dependency to context-internal, which is removed from the snapshot.
- Replace deprecated privilege checker API with security server
- Update smack & privilege w.r.t. security and pkgmgr
- Remove a smack rule 'ail::db'
- Switch to ecore mainloop to support ecore event handling

Change-Id: Ib21644a3466c54212b73c3b1bdb5d7cdd5570cf1
Signed-off-by: Mu-Woong <muwoong.lee@samsung.com>