MATH-1138 #comment Implemented new BiCubicSplineInterpolator,  supporting Akima Spline Interpolator and updated tests
Merge remote-tracking branch 'upstream/master'
Removed unused import.
Fixed end of line encoding problems.
Added Hank Grabowski as contributor.
Notified fix for bicubic splines.

Thanks to Hank Grabowski for the patch.

JIRA: MATH-1138
Merge branch 'master' of https://luc@git-wip-us.apache.org/repos/asf/commons-math.git