2 bug fixes: (1) make arrays for storing min_gini_ values larger, by feat_mix_(3), and (2) randomize the seed to the clock time for generating normally distributed offsets in scaleInvDiffFeatures
2 bug fixes: (1) make arrays for storing min_gini_ values larger, by feat_mix_(3), and (2) randomize the seed to the clock time for generating normally distributed offsets in scaleInvDiffFeatures

DaveRichmond-/vigra,psteinb/vigra,psteinb/vigra,DaveRichmond-/vigra,psteinb/vigra,DaveRichmond-/vigra,DaveRichmond-/vigra,DaveRichmond-/vigra,DaveRichmond-/vigra,DaveRichmond-/vigra,psteinb/vigra,psteinb/vigra,psteinb/vigra,psteinb/vigra