refine the file package.
Refine the net package, make test more stable.
Add the document for generic type parameters, refactor the reflect
package.
Refactor the stream package.
Refactor the test package.
Add a new MathUtil.
refine the utilities.
Refine some doc gen.
Finalize the commons-core 2.0.0
Prepare the lib for ant.
Finalize the commons-core 2.0.0