stats are unsigned

Signed-off-by: Kshitij Kulshreshtha <kshitij@math.upb.de>

git-svn-id: https://projects.coin-or.org/svn/ADOL-C/trunk@534 94ac48a7-3327-4b6a-8511-9a4036a20e83
Recompute the taylors for eq_plus_prod and eq_min_prod correctly

The original logic only worked on the first taylors, so was
correct only for _HOS_ and _HOV_ modes, but not for _HOS_OV_

Signed-off-by: Kshitij Kulshreshtha <kshitij@math.upb.de>

git-svn-id: https://projects.coin-or.org/svn/ADOL-C/trunk@535 94ac48a7-3327-4b6a-8511-9a4036a20e83
make the macro check clearer.

Signed-off-by: Kshitij Kulshreshtha <kshitij@math.upb.de>

git-svn-id: https://projects.coin-or.org/svn/ADOL-C/trunk@536 94ac48a7-3327-4b6a-8511-9a4036a20e83