1. added ExtractTextInfo.java to extract text and its information, such as position, direction, wmode, height, width, fontsize ...etc, and save as a XML file.
2. support vertical writing mode for CJK
3. support "testcjk" parameter to generated the clone of the PDF file with squaring every character
Merge branch 'ExtractTextInfo_1.8.7' of https://github.com/EugenePig/pdfbox into ExtractTextInfo_1.8.7