Parallel Colt version 0.7.1 released

- Fixed bug in build.xml causing generation of incomplete source code distribution.
- Fixed bug in DelegateDoubleMatrix1D and DelagateFloatMatrix1D causing NullPointerException when toString() method was called.
- Fixed bug in JCublas.cublasInit() causing NullPointerException in some cases.
- Added DiagonalDoubleMatrix2D and DiagonalFloatMatrix2D.
- Some optimizations in complex matrices.
- JTransforms updated to version 2.3.
- Cosmetic changes.