Only search for regular names; should fixe #include of ROOT-6976.

(cherry picked from commit 06775424bd1a0b5519dbb845367920d82ceb69d8)
ROOT_SVN_REVISION is gone; rely on ROOT_VERSION_CODE.

(cherry picked from commit 912891c4e3709935d35c6fc9aa46e94ed8b0fb1b)
Add a new function TMultiDimFit::GetCoefficientsRMS (from Y.Fisyak)