Adapt application file labeling to new requirements

Adapt application file labeling to new requirements

The following changes has been made:
- application base path must now be APPS_ROOT/$pkgID, not
  APPS_ROOT/$pkgID/$appID
- application base path is now enforced, no files outside base path allowed
- application base path will be labeled with User::Pkg::$pkgID, no transmute
- SECURITY_MANAGER_PATH_TYPE_RO will be labeled with User::Pkg::$pkgID::RO
- applications get a Smack rule for RO access to User::Pkg::$pkgID::RO
- SECURITY_MANAGER_PATH_PUBLIC_RO will be labeled with User::Home
- SECURITY_MANAGER_PATH_PRIVATE and SECURITY_MANAGER_PATH_PUBLIC path types

Change-Id: I2d0260effcbe8da0c0e9130b89b4b34e7e104d29
Signed-off-by: Rafal Krypa <r.krypa@samsung.com>