flag a couple fixes and their derived clases as incompatible with resetting atom IDs

src/RIGID/fix_rigid_small.cpp

@@ -72,6 +72,7 @@ FixRigidSmall::FixRigidSmall(LAMMPS *lmp, int narg, char **arg) :
   create_attribute = 1;
   dof_flag = 1;
   enforce2d_flag = 1;
+  stores_ids = 1;
   
   MPI_Comm_rank(world,&me);
   MPI_Comm_size(world,&nprocs);

src/RIGID/fix_shake.cpp

@@ -64,6 +64,7 @@ FixShake::FixShake(LAMMPS *lmp, int narg, char **arg) :
   thermo_virial = 1;
   create_attribute = 1;
   dof_flag = 1;
+  stores_ids = 1;
   
   // error check