Log message:
Import CRF++-0.58 as textproc/CRF++.

CRF++ is a simple, customizable, and open source implementation of Conditional
Random Fields (CRFs) for segmenting/labeling sequential data. CRF++ is designed
for generic purpose and will be applied to a variety of NLP tasks, such as Named
Entity Recognition, Information Extraction and Text Chunking.