fix describtion
Add tools to get the IDF value, yat
improve to get words like '高3'.
lexicon optimization.
comment two unused marco define.
changes report for friso.
You know what, i have to uncomment the print & println
Add complex chinese secondary split plan.
Add relative path search for dictionary & search improve.
fix two bugs
report the process for 1.6.1
添加detect检测模式切分。
更改1.6.1说明文档和开发帮助文档
说明文档中增加对PHP的扩展的说明。
增加PHP扩展和sphinx token filter计划
完善friso.ini配置说明，增加PHP扩展使用的详细文档。
upcoming functions for friso
add syn words append for detect mode
improve the relative friso.lex.ini searching
fix bug for buffer reach the length of allocations