use c++14 smatrix
add SMatrix constructor w/o initialization
do not zero jacobian
Adapt DataFormats/Math to work with the new SMatrix.
Merge pull request #3488 from ktf/fix-dataformats-math-new-smatrix

Adapt DataFormats/Math to work with the new SMatrix.
Merge remote branch 'origin/CMSSW_7_1_X' into CMSSW_7_0_X
Merged SMatrix14 from repository VinInn
avoid zero in similarity
Merge remote branch 'origin/CMSSW_7_1_X' into CMSSW_7_0_X
Merge remote branch 'origin/CMSSW_7_1_X' into CMSSW_7_0_X
do not rezo matrices that will be soon fully filled
avoid copy constructor
avoid copy constructor
Merge remote branch 'origin/CMSSW_7_1_X' into CMSSW_7_0_X
Drop spurious Math directory.
Merge pull request #3511 from ktf/fix-SMatrix14

Make use of new SMatrix features
Merge remote branch 'origin/CMSSW_7_1_X' into CMSSW_7_0_X
Merge remote branch 'origin/CMSSW_7_1_X' into CMSSW_7_0_X
Merge remote branch 'origin/CMSSW_7_1_X' into CMSSW_7_0_X
Merge remote branch 'origin/CMSSW_7_1_X' into CMSSW_7_0_X