Added APP_PATH_PUBLIC and APP_PATH_FLOOR types to perm_app_setup_path function.

Added APP_PATH_PUBLIC and APP_PATH_FLOOR types to perm_app_setup_path function.

Current functionality of perm_app_setup_path is not fully compatibile
with how Smack policy should look like in Tizen 3. For better
compatibility new APP_PATH_PUBLIC type has been added and implementation
of APP_PATH_GROUP_RW, APP_PATH_PUBLIC_RO and APP_PATH_SETTINGS_RW has
been changed to work exactly as APP_PATH_PUBLIC.
Moreover, APP_PATH_FLOOR type has been added that should be used to
label files and directories with "_" (floor) label. This label should be
used from now instead of APP_PATH_ANY_LABEL. APP_PATH_ANY_LABEL is still
supported but it behaves like APP_PATH_FLOOR - it just is for API
compatibility reasons.

Removed all path related tables, views, indexes etc. and code as well.

Verification may be done with the following:
security-tests.sh libprivilege-control --runignored --output=text
sqlite3 /opt/dbspace/.rules-db.db3 ".schema" | grep path
However, some test cases must be rewritten after this patch is accepted.

Change-Id: I6019ba67aa2d032acdee05a2e5c98f2dd6895fb3
Signed-off-by: Sebastian Grabowski <s.grabowski@samsung.com>