added faster single-purpose anisotropy calculation via tenAnisoEval_f and tenAnisoEval_d and the underlying function point arrays _tenAnisoEval_f and _tenAnisoEval_d
added faster single-purpose anisotropy calculation via tenAnisoEval_f and tenAnisoEval_d and the underlying function point arrays _tenAnisoEval_f and _tenAnisoEval_d


git-svn-id: 9e9401559e51101c165cdce4d49b411eb20436ed@2933 3d70eeeb-363e-0410-a505-8a46323a89f2

Slicer/teem,Slicer/teem,BRAINSia/teem,BRAINSia/teem,BRAINSia/teem,BRAINSia/teem,Slicer/teem,Slicer/teem,BRAINSia/teem,Slicer/teem