Merge remote-tracking branch 'origin/master'Determines size and creates
a MatrixMap based off of rows, columns, and
clustersize. Gives a complex helper function warning. 

Now more details about the implementation in the comments about
functions. Handling of indivisable record counts.
Logistic Regression now works with dense matrices using PBblas called
Logistic. Previous implementation of Logistic Regression is now named
Logistic_sparse.

Requires PBblas/IElementFunc.ecl and PBblas/Apply2Elements.ecl