Added UDFType annotation
Added @Description and @UDFType
Added a signature addBias(array<int> features, int bias>)
Moved getTaskID() to HadoopUtils
Added scripts to create a dual table
Added a utility class used to parse options
Add a function regression_datagen() used to generate regression datasets
Removed logging and changed options
Add compare(int,int) because Integer.compare(int,int) is supported from
JDK 1.7
Fixed a bug in "-ordered" option
Fixed to use different seed for each task
Merge pull request #76 from myui/hotfixes

Hotfixes