* include/abg-comparison.h (diff::{priv, sptr}): New types.
(diff::priv_): New member.
(diff::*): Remove all the other previous data members and
transform the inline member function definition into declarations
only.
* src/abg-comparison.cc (class diff::priv): New private data type.
(diff::*): Define the previous inline member functions as
out-of-line here.
Signed-off-by: Dodji Seketeli <dodji@redhat.com>
