policycoreutils/hll/pp: Fix role/roletype scoping

- Create role declarations no matter if the declaration is in base or
  a module. Since CIL does not permit role re-declarations, this change
  will break existing policies that have the same role declared in multiple
  modules. To fix this, the policies will need to change the role to be
  defined in a single place.
- Pass around the avrule_decl stack rather than just the most recent
  decl. The full stack is needed to determine if identifiers are in
  scope
- Only create roletype statements for a role and a type in two cases:
   1) The role is declared/required and the type is declared/required in
      the same scope or an ancestor scope of the role
   2) The type is declared/required and the role is declared/required in
      an ancestor scope of the type

Signed-off-by: Yuli Khodorkovskiy <ykhodorkovskiy@tresys.com>
Acked-by: Steve Lawrence <slawrence@tresys.com>
1 file changed